4870 Overclocking Thread

[HamTard]

Anybody here running the HD4870 on a 500W PSU? I want the 4870 but I'm not sure if my Antec EA500D 500W PSU is up to the task. I have 1 DVD-RW and 1 HDD, 4GB DDR2 800 RAM, E8400, and Antec 900 with the 4 stock fans.

[Xcel]

Has anyone noticed whistling caps on their 4870? My Sapphire 4870 has been doing that since day 1.

Yes but very rarly, for instance only during the loading screen in Black and White 2 where it does 3000fps. Oh another place is when I scroll huge images in ACDsee, I have Sapphire as well.

Anybody here running the HD4870 on a 500W PSU? I want the 4870 but I'm not sure if my Antec EA500D 500W PSU is up to the task. I have 1 DVD-RW and 1 HDD, 4GB DDR2 800 RAM, E8400, and Antec 900 with the 4 stock fans.

Well my maximum power consumption from the wall is 330w, so at ~83% efficiency the PSU outputs 274w.

that's with

E6400 @ 3.2GHz 1.55vcore
2GB ram
2HDs, DVD
5 120mm fans
Audigy 2 ex
Corsair HX620

[HamTard]

So you're saying it should work then?

I just ordered the VisionTek HD4870 512mb GDDR5 for $269.99 + $5.99 ground shipping + $8.10 ExpressRMA insurance - $20 Mail-in Rebate from NCIX.com (Canada). It's a special deal on today.

[Xcel]

Yes I would say so, 500w is more than enough since you won't be close to maxing it out anyway.

On topic, running mine at 790/4400, can't be bothered with bios flashing or amd gpu clock tool

[chawks2]

So you're saying it should work then?

I had a PSU issue with my 4870 running an OCZ 520, but I'm also running 5 x 3.5" HDDs, 2 x ODD, 12v pump, 4 120m fans.

I realized power was my issue when one of the 4 LEDs on the back of the card lit up when stressing out the card. These LEDs on the back of the card are a great addition when troubleshooting.

Oh and this PSU would probably be ok for a stock machine w/above config, but we all dont live in the stock room.

[holwill]

Can anyone confirm the safe max operating temps for the HD4870 PWM's?

[Kondik]

I presume the max is somewhere at 110 , but the less the better, i managed to keep it under 70 , with stock is 70 ~ 95 , so be carefull with this. I'd presume keep it under 80

[r4st4m4n]

Anybody here running the HD4870 on a 500W PSU? I want the 4870 but I'm not sure if my Antec EA500D 500W PSU is up to the task. I have 1 DVD-RW and 1 HDD, 4GB DDR2 800 RAM, E8400, and Antec 900 with the 4 stock fans.

I do. CoolerMaster iGreen power 500W (33A on the combined +12V). 1 HDD + rest of the config in sig with the HD4870 OC at 840/1000. So far no issue

[Elfear]

Anybody here running the HD4870 on a 500W PSU? I want the 4870 but I'm not sure if my Antec EA500D 500W PSU is up to the task. I have 1 DVD-RW and 1 HDD, 4GB DDR2 800 RAM, E8400, and Antec 900 with the 4 stock fans.

I'm running a Antec EA500 with an HD4870, 1 hdd, 5x120mm fans (beefy ones too), E8400@4.0Ghz, and 4GB ram with no issue. I have the earlier non-D model but I imagine you'll be just fine with your configuration.

[HamTard]

I'm running a Antec EA500 with an HD4870, 1 hdd, 5x120mm fans (beefy ones too), E8400@4.0Ghz, and 4GB ram with no issue. I have the earlier non-D model but I imagine you'll be just fine with your configuration.

Your sig hasn't been updated for the HD4870 you have.

I think the non-D models are made by a different manufacturer than the D ones, although it's unclear if performance has changed, since there are no good comparison reviews.

[tuksonrider]

CPU = Q6600 @ 3.6GHz; ATI 4870 790/1100
Vantage Scores:
P9,106
CPU = 12,241
GPU = 8,390

http://service.futuremark.com/home.a...&resultType=19

[highspeed]

Damn annoying CCC profile load stops working for me @ 820/1100... dont wont do go further without proper speed on fan :/ Well well no artifacts in 3dmark atleast.

3dmark06 http://service.futuremark.com/compare?3dm06=7601202. q6600@3800, 4870@820/1100, should get more dont know whats up. Im a noob when it comes to tweaking.

[Major97702]

Yeah I don't get it, my old 8800GT got 14,302 in 3dmark06, and my 4870 only gets like 14,600ish...... guess really not optimized for it.

[r4st4m4n]

Yeah I don't get it, my old 8800GT got 14,302 in 3dmark06, and my 4870 only gets like 14,600ish...... guess really not optimized for it.

I have the same kind of results with 3dmark06. But if you look at the FPS in games, it's not hard to tell the difference

[v0dka]

3dmark06 http://service.futuremark.com/compare?3dm06=7601202. q6600@3800, 4870@820/1100, should get more dont know whats up. Im a noob when it comes to tweaking.

Thats about what I get with a quad at 3.8Ghz, and the card at 850/1050. Vista x64 stole 600 points of my CPU score though, I get >5900 in 32 bit XP.

http://service.futuremark.com/compare?3dm06=7562343

I guess in 06 it's pretty hard to go faster with a 3.8Ghz Kentsfield. Raising clocks on the card from 750 to 850 didnt do much at all. Can anyone confirm?

[annihilat0r]

Hey guys, would any of you be kind enough to upload me a modded and working 4870 BIOS? I flashed it myself but (even with the 100+k BIOS) it wouldn't POST.

Is it possible to raise voltages (even a little bit) with the BIOS? Modded fan settings + raised voltages would be awesome. Thanks.

[highspeed]

damn im happy, mounted an arctic cooler accelero with 2x 120 fans and damn that thing is awesome. from 80c idling to 36c idling and from 90c+ load to 50c(with furmark, lower with games) load at lowest possible speed on fan = silent or as the stock cooler at standard idling.

edit: noticed with everest that the gpu vrm temp was high as 126c with furmark.. thats alot , how much can they handle?

[xMrBunglex]

you'll want the latest version of Everest. i heard the older ones don't read the VRM temps correctly. only the latest beta does.

[highspeed]

hmm installed everest 4.50 1448 beta and it shows kinda same :/ well well when gaming it seems VRM temps is stable from 95-87c though.

[xMrBunglex]

4.50 beta 1454 is the one that supposedly reads the VRM's correctly. i don't have it so i can't confirm. i'm just repeating what i read on Rage3D.

[Tox]

I just tested with 4.50 beta 1460 and my VRM is still über high. 125°C with Furmark.
I have the Accelero S1 with Zalman heatsinks on the VRM´s and an 80mm blowing at ~3700rpm right on top of them.

[holwill]

edit: noticed with everest that the gpu vrm temp was high as 126c with furmark.. thats alot , how much can they handle?

I just tested with 4.50 beta 1460 and my VRM is still über high. 125°C with Furmark.
I have the Accelero S1 with Zalman heatsinks on the VRM´s and an 80mm blowing at ~3700rpm right on top of them.

Same here to, have posted on numerous sites but not got the answer to it really, other than lots and lots of cooling.

[Kondik]

4850 and 70 would proppably need a bigger heatsink and then you can blow cold air on them , something that's 2x2 cm can't be cooled propperly, my heatinks on PWM's were 1.5 x 8 cm, that was enough to keep it under around 80 degrees in FurMark. Cooling an bug is just an placebo effect

[gundamit]

Does AMD GPU Clock tool work with two cards and 8.7 beta? I get SET CLOCK FAILED for the second card.

Glad to hear I'm not the only one with that problem. I'm using a Biostar IP45 mobo with a pair of 4870 in Crossfire. Card in slot 0 gets the same "fail" message but the card in slot 1 clocks up without any problem. Is there a driver version that works better with AMD GPU Clock Tool? Is there another GPU overclocking utility I should try?

[Kondik]

That's easy, tur of OCing in CCC and OC only in AMD GPU Tool, i could put both cards to 800/1100 , but with CCC OC activated i clould set both cards propperly, just one