4870 Overclocking Thread

[dejanh]

hi guys

how are these hd4870 watercooled temps? ok?
full load furmark



those vddc temps are pretty high.
I'm using the EK full cover block. The voltage regulator cooler provided kind of sucks.

These temps are very good. No problem there. Are you volt modding your card?

[cakofony]

when I oc my card (x2) I get no performance gain in 3dm06, my score actually went down 20 points.
I overclocked gpu from 750 to 800 and mem from 900 to 945.

do you think that is just because 3dmark uses such a low resolution that it is cpu restricted?

[erocker]

Did you make sure that the OC stuck by looking at GPU-Z?

[cakofony]

Oh wow, gpuz is reporting it to be at stock speeds, even after overclocking it

[dejanh]

Posted this in the voltmod thread but thought it would be good to post it here too...

...and the saga of failed non-reference 4870s continues (definitely worth a read as what they are seeing is an ongoing issue with all 4870, especially with after market cooling)...

http://en.expreview.com/2008/08/23/p...-issues-check/

[|Oc|REvO_HsArC]

These temps are very good. No problem there. Are you volt modding your card?

no... all stock. Here, the card idles 7º above my water temp! and 20º full load. I'm using the EK full coverwaterblock.

I see people with lot less temperature on air.

[0ut0fstep]

If you ask me your temparatures suck

Thats some constructive criticism right there. And to dish some back since we are being nice and all. You provided no time stamp that could be running for 5 seconds. No ambient room temperatures listed. not using a real benchmark for temps. Atitool is great for checking for artifacts but beyond that its kinda useless. and since I cant be a complete ass those temps are pretty nice if your actually running a real benchmark for a period of time. Also get the latest version of gpu-z so you can see your vrm temps. Hard to beleive those aluminum blocks you are using are cooling the VRM's well enough would like to see some temps.

[M-XXXX]

Thats some constructive criticism right there. And to dish some back since we are being nice and all. You provided no time stamp that could be running for 5 seconds. No ambient room temperatures listed. not using a real benchmark for temps. Atitool is great for checking for artifacts but beyond that its kinda useless. and since I cant be a complete ass those temps are pretty nice if your actually running a real benchmark for a period of time. Also get the latest version of gpu-z so you can see your vrm temps. Hard to beleive those aluminum blocks you are using are cooling the VRM's well enough would like to see some temps.

Sorry if I did offend anyone, yes I could write your temparatures are noot so good, you could have better, I think your core temp and PWR temps are high, or I could just wrote what I did.

You provided no time stamp that could be running for 5 seconds.

Ive didi, but you havent noticed- hint GPU-z has graph of GPU LOAD, and you can see it from the picture that is at 100% for full lenght of graph, and on the graph with "bat temparatures" isn't like my, so I my card was under bigger load for longer time.

No ambient room temperatures listed.

I dont know them (still waiting for K-type sonda) but is quite hot here- about 25C+

Atitool is great for checking for artifacts but beyond that its kinda useless.

I know that, because of that Ive tryed that and temparatures were just few C higher

Hard to beleive those aluminum blocks you are using are cooling the VRM's well enough would like to see some temps.

Probably here is the problem- afcourse I have fan thats blowing and mixing hot air over the card


Btw my card died few hours ago- my advice is: Dont even test MSI P45 DDR3 MB, not that has just killed my card, I had more then 100x restarts in few hours, better I don't start talking about the problems, while it was working (I even didn't know you can have so many problems) I like the most when floopy controler isn't working- have I mentioned i dont have floppy

[dejanh]

Here we go gents (and maybe some ladies)...time to stir up some s***

I've been posting for weeks now how it looks like there are major issues with 4870 VRM cooling and/or the overall power design...some listened, some did not...

Finally, here is some official confirmation of VRM issues...sadly ATI just "glazes" over this by hacking the driver and not fixing a problem...

http://en.expreview.com/2008/08/26/a...it-run-slower/

Now again, I will care to reiterate over all of the threads that I have been posting in related to this...

This thread is a pretty good collection of all the places I have posted about this already (see first post)... http://forums.tweaktown.com/f31/diam...edition-27348/

Let's hear some opinions!

[xMrBunglex]

Here we go gents (and maybe some ladies)...time to stir up some s***

I've been posting for weeks now how it looks like there are major issues with 4870 VRM cooling and/or the overall power design...some listened, some did not...

Finally, here is some official confirmation of VRM issues...sadly ATI just "glazes" over this by hacking the driver and not fixing a problem...

http://en.expreview.com/2008/08/26/a...it-run-slower/

Now again, I will care to reiterate over all of the threads that I have been posting in related to this...

This thread is a pretty good collection of all the places I have posted about this already (see first post)... http://forums.tweaktown.com/f31/diam...edition-27348/

Let's hear some opinions!

i understand what you're saying. while this is far from ideal, at least the only problem is with Furmark. nobody buys a video card to play Furmark. i have a G15 keyboard and Everest and i can monitor my VRM temps while i'm playing games and i've never seen them go over 90°C. if a new game comes out that stresses my VRM's like Furmark does, then i'll get mad. until then, i see it as nothing more than a minor disappointment.

[MomijiTMO]

Yeah I think some cards are just dodgy. The temps some people got were well over 100C even with a couple of fans pointing directly at it.

[Unrealer]

Sapphire with blue PCB








850/4800?

[xMrBunglex]

will you do some tests with the blue PCB model and share your temps with us? i'm particularly interested in VRM temps while running Furmark with the 8.7 driver. i wonder if ATI changed the reference design to improve something.

[MomijiTMO]

Probably. Sapphire don't even sell the reference 4850 now so it could be that they have phased out the reference 4870 too. Pull off the heatsink Unrealer

[Unrealer]

will you do some tests with the blue PCB model and share your temps with us? i'm particularly interested in VRM temps while running Furmark with the 8.7 driver. i wonder if ATI changed the reference design to improve something.

Sorry but im using 8.8

Tell me exactly what test do u want... for example , which fan speed...

[Barr3l Rid3r]

Sorry but im using 8.8

Tell me exactly what test do u want... for example , which fan speed...

We want u to strip it and make it naked... so we can see the vrm used on it.

[Unrealer]

We want u to strip it and make it naked... so we can see the vrm used on it.

Sorry but im not going to pull off the cooler not at the moment.

[xMrBunglex]

if you don't want to switch your driver, would you rename the furmark .exe file to another name and run it? then monitor your VRM temps with the latest GPU-Z. that will tell us if the new blue PCB cards have better voltage regulators.

[dejanh]

Yes please do what they asked above

[Unrealer]

if you don't want to switch your driver, would you rename the furmark .exe file to another name and run it? then monitor your VRM temps with the latest GPU-Z. that will tell us if the new blue PCB cards have better voltage regulators.

I dont know why but furmark doesnt start i can try ati tool or Rthdribl

[dejanh]

Doesn't start as in "crashes" or does not start at all? If it does not start at all try reinstalling your drivers...

If it crashes...well, that's probably our answer...

[Barr3l Rid3r]

probably u are trying to run it in an unsupported resolution mode...

[Unrealer]

probably u are trying to run it in an unsupported resolution mode...

I tried 1280x1024 & 1680x1050.

Doesn't start as in "crashes" or does not start at all? If it does not start at all try reinstalling your drivers...

If it crashes...well, that's probably our answer...

No, it doesnt start when i run it the screen gets black

[Barr3l Rid3r]

I tried 1280x1024 & 1680x1050.



No, it doesnt start when i run it the screen gets black

latest version of furmark? what about the renamed test?

[Unrealer]

latest version of furmark? what about the renamed test?

Thanks, i downloaded the latests version and it runs, is strange cause the version i had run withe the previous 4870...

Well, later ill post the tests but, what fan speed do you want? normally i use 35%.