4850 vs 8800GT 3dmarks & Accelero S1 test

I got a gigabyte 4850 card and run some 3dmarks to compare with 8800GT. I have also mounted Accelero S1 cooler and I was amazed by the temperature drop I saw. Basically stock cooler is a total crap and you can't really control fan because it runs only @ 10%. Anyway at full RPM it would be very loud.

Test system:
ATI HD4850 @ 700/1000, driver 8.6 with hotfix
NVidia 8800GT @ 700/1000, 175.16
DFI LP T3R, E8500 @ 4.4Ghz
2x1GB DDR3 7-6-6-18 @ 815Mhz
Zippy 700W PSU, cut down XP SP2


Results, I cant overclock 4850 more than 700 at the moment because there is no tool that supports it except CCC

3dmarks

http://img171.imageshack.us/img171/8068/chartih4.th.jpg

Temperature

http://img293.imageshack.us/img293/2...art1ix6.th.jpg


HD4850 has a standard hole spacing, same as 8800gt and other so Accelero S1 fits just fine :)

http://img207.imageshack.us/img207/9...os14850zl3.jpg


I have also attached screenshots of 4850 3dmark runs

lookin good m8 .....keep pushing it.....good start from ati this round! :cool:

thanks for confirming that the accelero s1 fits :)

how do you cool the components on the rear of the card? just the blowing fan?

great to know the Accelero S1 fits, thx and can't wait for some decent OC sw so you can really push the card

Interesting, will you be running any game benches?

I would also like to see game benchies. More specifically, the GT vs the 4850 in HL:2 Ep:2 which uses the newest version of the source engine.

Thanks for taking your time to test this for us :)

Wow, those temps are insane. What a difference. I wonder how high it will clock with better tools available?

Can't wait for game benchies...

Anyone stop to consider that maybe ATI purposely limited the OC potential of the 4850 as it is basically the same GPU as the 4870.

What's going on with the cooler? The stock cooler is so poor that there's such a huge difference?

Power management appears to be not working on the 4850 currently, fan is also stuck at 14% speed hence the high temps.

i got a sapphire 4850,with the stock cooler which is really crappy i had around 80 degrees idle,after changing the cooler with an TR HR-03 GT idle temps went down to 41 degrees.
room temp is around 28 degrees.
the most ive seen so far under load is 58 degrees but i still dont have a tool to log it so its just alt-tab observation.

when there is no load on the GPU(0%) the core goes down to 500mhz from the standard 625

Yes, stock cooler runs only @ 10-15% but as I said at full RPM it would be very, very loud. I can't touch the card even when idle, burns my finger :eek: :D If you don't plan changing stock cooler then at least re-apply thermal paste and add an extra 120mm fan somewhere :)



I am very sorry but I don't have any games to test where 4850 would really shine (I only have UT2K4 and BF2 where they both have 200+ FPS at highest settings) :p:

Hiya.

I have 2 of these puppies with S1 on them. Now...How on earth do I use them in Xfire WITH some fans ? LOL. Board is MSI P35.

Also,
Should I get P45 board for better Xfire?

on my maximus formula theres not enuff space for a 120 fan between the cards, i ordered the fan modules they make for these cards to cure that. this cooler is amazing on the 4850's, i didnt like it on the gst 512. I had it sitting here so I thru it on one of the cards and knocked it down to high 30's idle and high 50's load ! I ordered another for the second card.

I am wondering what an Accelero extreme will do to that card..
Question:
I need an opinion if this will fit
http://www.techpowerup.com/reviews/M...mages/back.jpg (save image and rotate it until the DVI ports will face left side)
http://www.arctic-cooling.com/downlo...Xtreme2900.pdf .. this is the accelero 2900 backside..I feel that the bolts around the core will fit and maybe other bolts...I will get 15C or 10C maybe with this cooler..

Pls advice...Is the 8800GT identical with 9800GTX fiting (bolts and stuff) ?

those links no worky

Quote:

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Originally Posted by Losphoron

I am wondering what an Accelero extreme will do to that card..

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It'll do nothing since the Extreme won't even fit.

what's a good aftermarket cooler to fit these bad boys with them in crossfire?

Done.. they work now..

x8/x8 sucks for 4850s in CF. Go for x16/x16 if you can for optimal performance.

Perkam

Quote:

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Originally Posted by wadec22

what's a good aftermarket cooler to fit these bad boys with them in crossfire?

---

accellerro s1 rev 2

but you'll need some extra sinks for the pwm on the card.

First thing I did when I bought my Visiontek 4850 was to crack open the heatsink, clean out the thermal paste and put a dab of OCZ Freeze on there.

Temps where 65c idle and no more than 78c on full load. This is with a overclock of 700/1100. I'm sure the memory can go higher but I got impatient with the Catalyst drivers auto finding feature.

Can't wait for some other software to come out that'll give us more overclocking options. I would love to see results with that Accelero it's just to bad the memory wasn't DDR5 but I love this card anyway. :up:

http://upshizzle.com/gallery/albums/...wbettertmi.jpg

Quote:

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Originally Posted by Rattle

accellerro s1 rev 2

but you'll need some extra sinks for the pwm on the card.

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doesn't the accelero block the area where you would place the xfire bridges?

Quote:

---

Originally Posted by Losphoron

I am wondering what an Accelero extreme will do to that card..
Question:
I need an opinion if this will fit
http://www.techpowerup.com/reviews/M...mages/back.jpg (save image and rotate it until the DVI ports will face left side)
http://www.arctic-cooling.com/downlo...Xtreme2900.pdf .. this is the accelero 2900 backside..I feel that the bolts around the core will fit and maybe other bolts...I will get 15C or 10C maybe with this cooler..

Pls advice...Is the 8800GT identical with 9800GTX fiting (bolts and stuff) ?

---

Quote:

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Originally Posted by ToTTenTranz

It'll do nothing since the Extreme won't even fit.

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Well, it will do a lot if the mountingholes are the same as on the HD 38** series, you CAN mod the Accelero Extreme 2900 to fit;

http://img135.imageshack.us/img135/5381/00012ne8.th.jpg
http://img47.imageshack.us/img47/8793/9998752yo6.th.jpg
http://www.xtremesystems.org/forums/...&postcount=103

Quote:

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Originally Posted by wadec22

doesn't the accelero block the area where you would place the xfire bridges?

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yes but I clipped one fin to fit the connector thru, it goes in between 2 fins now and slides right between them from outside the cooler and its only the top card.

Quote:

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Originally Posted by wadec22

doesn't the accelero block the area where you would place the xfire bridges?

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yes but I clipped one fin to fit the connector thru, it goes in between 2 fins now and slides right between them from outside the cooler and its only the top card.

also for my bottum card while I wait for my second cooler, i ddint like the 85c temps i took a yate loon and glued it with 3 dabs of super glue to the copper HS like so.

BLAM $4 high speed yate loon and 48c idle and 67c load, my accellerro'd top card which doesnt even have a fan mounted on it runs 10c cooler at idle and load.


http://s16.photobucket.com/albums/b6...t=IMG_1000.jpg
http://s16.photobucket.com/albums/b6...t=IMG_0999.jpg
http://s16.photobucket.com/albums/b6...t=IMG_0995.jpg

I have 4 yate loons stacked 2 high blowing on the side of the cards, in a ghetto stacker 830 fashion. I has to come up with my own sinks for the pwm on the cards, I had a combo of old thermalright sinks and some other ones laying around, you can see them in these pics along with the ghetto yate mod lol.

Quote:

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Originally Posted by kiwi

I got a gigabyte 4850 card and run some 3dmarks to compare with 8800GT. I have also mounted Accelero S1 cooler and I was amazed by the temperature drop I saw. Basically stock cooler is a total crap and you can't really control fan because it runs only @ 10%. Anyway at full RPM it would be very loud.

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I have a HIS 4850 coming. I wonder if you can increase the stock fan-speed with RivaTuner?:confused:

eventually

Quote:

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Originally Posted by Clint

Well, it will do a lot if the mountingholes are the same as on the HD 38** series, you CAN mod the Accelero Extreme 2900 to fit;

http://img135.imageshack.us/img135/5381/00012ne8.th.jpg
http://img47.imageshack.us/img47/8793/9998752yo6.th.jpg
http://www.xtremesystems.org/forums/...&postcount=103

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Oh mate ... :D

You read my mind ..Lol
I suppose 3850 pcb = 3870 = 8800GT..3850 and 4850 can be fitted with accelero S1 so if you fitted it with the accelero 2900 results that it can be fitted on 4850..lOL

Quote:

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Originally Posted by perkam

x8/x8 sucks for 4850s in CF. Go for x16/x16 if you can for optimal performance.

Perkam

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Proof? x8 should be more than enough for this card. It gets about 15k in 3dmark06 and just the other day I got 10k on a 4x slot in my bosses computer I built, 8x is double that so its well within the limits as far as I am concerned.

Quote:

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Originally Posted by 古強者死神

Proof? x8 should be more than enough for this card. It gets about 15k in 3dmark06 and just the other day I got 10k on a 4x slot in my bosses computer I built, 8x is double that so its well within the limits as far as I am concerned.

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How did you get your username like that...........:confused: Are you from the Matrix? :p:

Anyone using an Accelero S1 that needs a heatsink to cover the back chips under the copper-pegged heatsink, just hacksaw the original heatsink off and reuse it. It works quite well.

I got the Asus 4850 and i can change the fan speed with SmartDoctor, the tool that asus provides.

how about some gaming benchmarks :)

Just got a 4850 and a Accelero S1 rev.2 , is it totally necessary to add heatsink on the voltage regulators? Thought I saw some Asus 4850 which has after market cooler on it without any sinks on voltage regulators.

Btw , good tip on sawing the original heatsinks voltage regulators copper sink off and reusing it. Might aswell do that.

yes, definitely do NOT leave the VRMs bare without cooling. These need cooling, and good cooling at that.

Ok, thanks for the info. Frying a brand new 4850 on the first day would not be cool :)

Quote:

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Originally Posted by sam0t

Ok, thanks for the info. Frying a brand new 4850 on the first day would not be cool :)

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Yeah...i'm really unimpressed with ATI's decision...super-duper low fan-speed(by default). I've got the HIS 4850, and when i first power-up, for a split-second, the fan spins up to about 6000rpm's(it whirs..:eek:)...then back down to lame-speed.:down:

Quote:

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Originally Posted by 1Tanker

I have a HIS 4850 coming. I wonder if you can increase the stock fan-speed with RivaTuner?:confused:

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The ASUS-supplied software works for fan control, at least with its own 4850 card. You might want to give it a try with your card, they could be the same card IMO.

So far IMO the best and cheapest trick is to replace the default thermal garbage with some good AS and raise the fan speed to 50% - together these should bring down the temp to a reasonable level - ~5xC/7xC - yet card remains single-slot and most likely under warranty as well, depending on your skills. ;)

to use the asus fan control you need to flash your card to an asus bios.

Are you sure?

Quote:

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Originally Posted by gurusan

yes, definitely do NOT leave the VRMs bare without cooling. These need cooling, and good cooling at that.

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http://www.techpowerup.com/reviews/M...ages/front.jpg

Voltage regulation the grey chips on the right side of the pic? Shouldn't active air take care of the them if you mount a 120mm on the Accelero?

EDIT Nevermind, I'm just going to just use the stock heatsink that is attached to the VRM area.

What are the 8 tiny black components right from the voltage regulators? Guess they need a sink too :/

edit:

Ok got the Accelero installed on 4850, very impressive. Idle 40c and load ~60c, around 35c drop in temp across the board!

I have a small problem though, when I load the GPU say 5 minutes or so the screen goes blank and a red error led lights up on the card. Maybe the voltage regulators are overheating ?

edit2:

The led indeed is for overheating (found on another forum) and since the GPU is running so much cooler, it leaver the voltage regulators. Used 5 copper ram sinks to cool em, but they run scorching hot, gotta do some modding on em.

sam0t, so you covered the 4 grey pieces and 8 smaller black pieces to the right with ram heatsinks?

did this drop the temperature?

http://www.ncix.com/products/index.php?sku=26871&vpn=BMR%2DC1L%28BCC9%29&manufa cture=EnzoTech

would those ram heatsinks in the link above work?

It seems there's enough room to solder four more voltage regulators in parallel to halve the load.

Kiwi, is the S1 you tested with a rev1 or 2?

What sort of temps do you guys get with AS5 + 100% fan speed on stock cooler? Ive been dealing with it on my 2900pro, I can deal with it on the 4850 :D for warranty sake! - Note, its not like I can hear it over the noisy 92mm delta high speed and the 1ft + lakewood metal cage fan blowing through my case lol.

Quote:

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Originally Posted by yellowBUM

sam0t, so you covered the 4 grey pieces and 8 smaller black pieces to the right with ram heatsinks?

did this drop the temperature?

http://www.ncix.com/products/index.p...cture=EnzoTech

would those ram heatsinks in the link above work?

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I have exactly those ram sinks in the link. I covered the grey pieces with 3 ram sinks as I had tough time getting 4 ram sinks to fit and covered the 8 black pieces with 2 ram sinks.

Also I just noticed that one heatsinks, that is on a ram, is really bent because of one of acceleros heat pipes.

Have to reseat the accelero and try to squeese 4 sinks on the grey capacitators, maybe and a fan too as the voltage regulator sinks run burning hot.

Quote:

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Originally Posted by sam0t

I have exactly those ram sinks in the link. I covered the grey pieces with 3 ram sinks as I had tough time getting 4 ram sinks to fit and covered the 8 black pieces with 2 ram sinks.

Also I just noticed that one heatsinks, that is on a ram, is really bent because of one of acceleros heat pipes.

Have to reseat the accelero and try to squeese 4 sinks on the grey capacitators, maybe and a fan too as the voltage regulator sinks run burning hot.

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Dude, you are a perfect example of someone who needs to hack saw the original copper-pegged heatsink off and use reuse it. It is easy to cut, just peel off the thermal pad and cut the edge just after the fan. Once you get 1/2 way, it will snap off with little force. Replace the thermal pad and screw it back into the original screw holes, and you have a perfectly fitting rear heatsink.

It really does work better then trying to wedge some heatsinks on there.

I hear you, I was just about to do that actually! Grew really frustrated over the matter :mad:

I reseated the ram sinks on the voltage regulators and added a fan on the accelero s1 to cool the voltage regulator heatsinks and got it stable. Btw. It was impossible to put 4 Enzotech 14x14x9mm ram sinks on the 4850 voltage regulators, they just did not fit! I ended up slapping em on the rams and using 3 of the accelero s1 own, slightly longer ram sinks on the grey voltage regulators.

Also one of the Accelero S1 heat pipes comes so near one of the 4850 corner rams, so I had to bend the ram sinks (height 9mm) fins abit to make it fit.

Long story short:

After my rather unpleasent experience I would recomend either using the 4850 original reference coolers voltage regulator piece (as described above) or using heat sinks and a fan to cool down them.

I would like to know my voltage regulators temps as they run extremely hot with passive cooling. On my case I needed a fan to get em stable, but as others suggest, the original voltage regulator copper heatsink should be enough in most cases. Depends much on the case air flow I guess. Some results to the end:

4850 GPU temps:

Accelero S1 rev.2 passive: idle ~40c, load ~70c. Unstable.
Accelero S1 rev.2 + 80mm fan: idle 37c , load 59c. Stable.
Accelero S1 rev.2 + 120mm fan: idle 35c, load 54c. Stable.

Quote:

---

Originally Posted by sam0t

I hear you, I was just about to do that actually! Grew really frustrated over the matter :mad:

I reseated the ram sinks on the voltage regulators and added a fan on the accelero s1 to cool the voltage regulator heatsinks and got it stable. Btw. It was impossible to put 4 Enzotech 14x14x9mm ram sinks on the 4850 voltage regulators, they just did not fit! I ended up slapping em on the rams and using 3 of the accelero s1 own, slightly longer ram sinks on the grey voltage regulators.

Also one of the Accelero S1 heat pipes comes so near one of the rams that I had to bend the ram sinks (height 9mm) fins abit to make it fit.

Long story short:

After my rather unpleasent experience I would recomend either using the 4850 original reference coolers voltage regulator piece (as described above) or using heat sinks and a fan to cool down them. I installed a 80mm fan on the accelero s1 and with it came a stable card and the GPU load temps dropped from ~70c -> 60c on load too. Gotta give a 120mm fan a try ;)

I would like to know my voltage regulators temps as they run extremely hot with passive cooling. On my case I needed a fan to get em stable, but as others suggest, the original voltage regulator copper heatsink should be enough in most cases. Depends much on the case air flow I guess. Some results to the end:

4850 GPU temps:

Accelero S1 rev2. Passive: Idle ~40c, load ~70c. Unstable.

Accelero S1 rev.2 and a 80mm fan: Idle 37c , Load 59c. Stable.

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I got mine setup with no fan's attached, just decent airflow in the case. My temps are 35c/58c using the hacked off heatsink.

My Antac Solo case air flow is plain bad it seem. Gotta do something about that, and also get another 120mm fan for the accelero, seems like people are getting crazy OC out of 4850 with Accelero S1 and 2 x 120mm fans.

Quote:

---

Originally Posted by kiwi

I got a gigabyte 4850 card and run some 3dmarks to compare with 8800GT. I have also mounted Accelero S1 cooler and I was amazed by the temperature drop I saw. Basically stock cooler is a total crap and you can't really control fan because it runs only @ 10%. Anyway at full RPM it would be very loud.

Test system:
ATI HD4850 @ 700/1000, driver 8.6 with hotfix
NVidia 8800GT @ 700/1000, 175.16
DFI LP T3R, E8500 @ 4.4Ghz
2x1GB DDR3 7-6-6-18 @ 815Mhz
Zippy 700W PSU, cut down XP SP2


Results, I cant overclock 4850 more than 700 at the moment because there is no tool that supports it except CCC
...

HD4850 has a standard hole spacing, same as 8800gt and other so Accelero S1 fits just fine :)

http://img207.imageshack.us/img207/9...os14850zl3.jpg

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Have you thought about testing the HD 4850 with the Accelero S1 passive?

Is that motherboard the DFI LANParty UT X48-T3R? If it is then it does have 2-way CrossFire at x16/x16 bandwidth.

Unless it's an optical illusion then it looks like installing a CrossFire setup with fans on the Accelero S1 wouldn't work. What do you think?

Just installed my accelero s1 rev 1 w/ 2 120mm fans and ramsinks over the 20 chips on my 4850, temps are 32 idle.

Quote:

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Originally Posted by msgclb

Have you thought about testing the HD 4850 with the Accelero S1 passive?

Is that motherboard the DFI LANParty UT X48-T3R? If it is then it does have 2-way CrossFire at x16/x16 bandwidth.

Unless it's an optical illusion then it looks like installing a CrossFire setup with fans on the Accelero S1 wouldn't work. What do you think?

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No, 120mm fan is silent in my case and cools VRMs, mosfets, video memory and the rest of the card :) Yes, it is DFI and yes spacing is not the best

Kiwi cheers for the review and tests, made for a good read and convinced me the 4850 coupled with a accelero is the biz for my new build, can you confirm if the accelero is the S1 or the S1 rev2 ??

I'm wanting to buy this one if its the correct one?
http://www.ebuyer.com/product/131149

I'll try the standard fittings if not i'll try the hacksaw trick on the original stock VRM heatsink

Regards :)

Quote:

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Originally Posted by JamesW

Kiwi cheers for the review and tests, made for a good read and convinced me the 4850 coupled with a accelero is the biz for my new build, can you confirm if the accelero is the S1 or the S1 rev2 ??

I'm wanting to buy this one if its the correct one?
http://www.ebuyer.com/product/131149

I'll try the standard fittings if not i'll try the hacksaw trick on the original stock VRM heatsink

Regards :)

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The one in the link looks like the discontinued Accelero S1 - http://www.arcticcooling.com/disc_prod1.php?type=2. The one you need is the S1 Rev.2 - http://www.arcticcooling.com/vga2.php?idx=147

Quote:

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Originally Posted by Freaky

The one in the link looks like the discontinued Accelero S1 - http://www.arcticcooling.com/disc_prod1.php?type=2. The one you need is the S1 Rev.2 - http://www.arcticcooling.com/vga2.php?idx=147

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both versions should work. i have the version 1 and it works perfectly. get load temps of 44 at 750/1100

Thanks for confirming the linked s1 (version one) will fit, think i'll go for that. Hasn't the new RBE v.1.1 now sorted the stock fan control now though? Some people say they aren't getting those high temps now they can up the fan from stock 10% to 50% ?

Hi, i have a question for you kiwi: changing the system cooling on a 4850, is it possible to leave the heatsink on the voltage regulators? Can i separate that heatsink from the rest of stock cooling?
Thx in advance.

The Accelero S1 version 1 will work fine on the 4850.

The only real problem I have run into is that one of the ram heatsinks is pretty close to a heatpipe and will take some adjusting to make it fit. Nothing serious.

Another problem, is the lack of the back end chip heatsink, but that is solved by previous posts.

Quote:

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Originally Posted by Bhairava

Hi, i have a question for you kiwi: changing the system cooling on a 4850, is it possible to leave the heatsink on the voltage regulators? Can i separate that heatsink from the rest of stock cooling?
Thx in advance.

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as stated above in other posts, you can just hacksaw the heatsink off and reuse it.

Quote:

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Originally Posted by Hiredgoon

as stated above in other posts, you can just hacksaw the heatsink off and reuse it.

---

I don't really want to hacksaw the heatsink.....
Other solutions? Can i leave the voltage regulator without heatsink or is it too risky?
Thx.

Accelero seems good enough to me, well worth the money imo, I think I'll get one myself that or I'll step it up to a vf1000 as the stock cooler seems like junk to me (and with the price of a good fan, the accelero will actually end up being around $50)

at 700/1110 with the stock cooler fan at 50%, my temps seem pretty good. 47C's idle/65c's load. I'm sure if I put some tx-2 on the core it would be even better, but if I take the stock heatsink off I'm just going to end up putting my accelero on it.... which I plan to do eventually anyways.

Can anyone take a picture of 2x 4850's in xfire with 2 acceleros on them. Mainly take the picture of the crossfire connector. I want to see how it looks. btw, I think if you cut the fan out of the surrounding plastic, maybe you can fit a 120mm on the accelero with both of them on.

Sadly, I just BARLEY fit one accelero into my rig with my water cooling tubes in the way. I might pick up some kind of accelero knock off that is smaller when I decide to crossfire.

Have game results been posted?

Perkam

No, but I recently switched from an xfx 8800 gt 512 to a HD asus 4850 and I got similar results in 3dmark06.

Stock4850 :
http://img.photobucket.com/albums/v5.../Stock4850.jpg

Biggest OC with CCC possible (actually not, I can reach 700/1110 but i forgot to push apply for this score :D):
http://img.photobucket.com/albums/v5...0700by1060.jpg

I noticed both times that I had a higher score with my 8800 gt... I haven't tested it with games yet. Sad that it doesn't do too well in 3dmark06. I gotta do some of these bios/pencil mods soon....

I will do some game benchies I guess when I get home.

Has anyone noticed that games... errr... "look" better with the 4850? I played a little CS:S for fun and I swear! The game looked better !?! And also it seemed like flashbangs didn't last as long.

Quote:

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Originally Posted by drizzt5

I noticed both times that I had a higher score with my 8800 gt... I haven't tested it with games yet. Sad that it doesn't do too well in 3dmark06. I gotta do some of these bios/pencil mods soon....

I will do some game benchies I guess when I get home.

Has anyone noticed that games... errr... "look" better with the 4850? I played a little CS:S for fun and I swear! The game looked better !?! And also it seemed like flashbangs didn't last as long.

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For whatever reason the 8800gt gets a similar score as the 4850, but in real games the 4850 is much faster. I guess 3dmark really isn't much of a benchmark.