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How to overclock a 7850 past 1050MHz?

After seeing this thread I decided to upgrade from the HD 4870 to the Sapphire HD 7850.
In Israel it's actually cheaper than a GTX 560 448.
Will the card go well with an i5 750 at stock clocks?
I also don't know how far I will be able to OC the new GPU because I idle on 50c, both CPU and GPU
 
Yes, those idle temps do seem high ...

I'm running a stock 920 on some unbranded cooler that came with the acer pc it once was :P and i'm hitting high 30s/low 40s idle and high 60s full load with an ambient of about 24C

It may be hotter in Israel, but I'd guess that unless you're keeping your pc in a conservatory, ambients shouldn't be too different indoors.

Do you have any sizeable case fans ?



On the 7850 front, I've postponed buying until some form of word comes through on osx compatibility as when i'm not gaming, I do find OSX far far more productive ... And it makes a lot better use of dual displays. I don't know whether OcUK is a massive mac hating flame fest, but I'll soon find out :P
 
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My case is an Enermax Staray
It came with 1 fan in the front and 2 on the left panel.
I moved the bottom left panel fan to the back, and temperature dropped to 50c idle
(my GPU used to idle on 70c and CPU on 60c)
I think 50c idle for the HD 4870 is kinda normal, but when(if) I will overclock the HD 7850 I don't want it to idle on that temperature.
 
I wouldn't say 50 is a great idle temp. For comparison my CPU and GPU are much cooler at idle, 22C and 31C respectively. Never really go above +5 in hotter weather.

50C-70C are more what you should expect from load temps.

What PSU are you using?
 
Ambient temperature is around 20c
I will probably get the Noctua NH-U12P SE2. Should fit inside the Enermax Staray.
How should I apply the thermal paste on the CPU? size of a grain of rice in the middle or spread?
Also like I asked before, will the HD 7850 overclocked to at least 1050/5800 and the i5 750 at stock clocks will perform good? I play on 1600x900 resolution.
 
I doubt you'll even need an overclock at all playing at 1600x900

You may want to check your fan layout in your case if your ambients are 20C ... a 30C hike at idle seems far far too much.
 
Oh, and there's tonnes of thermal paste guides on youtube.

Some say use a ball the size of a pea in the middle, others say spread to a thin layer using gloves.
 
Here are all the fans I got (one is behind the HDD's)
2a5yk34.jpg
 
Like many others, i have done my fair share of moaning about this new gen value for money. Then I took the plunge and purchased the sapphire 7850 2 fan edition for £190 (coming from a HD4870). I have managed to get to 1150 clock and 5300 memory stable (33% overclock for free). Am playing BF3 on ultra settings (no AA) and averaging mid to late 40fps.

Well happy!!
 
ianhopwood said:
Like many others, i have done my fair share of moaning about this new gen value for money. Then I took the plunge and purchased the sapphire 7850 2 fan edition for £190 (coming from a HD4870). I have managed to get to 1150 clock and 5300 memory stable (33% overclock for free). Am playing BF3 on ultra settings (no AA) and averaging mid to late 40fps.

Well happy!!
Click to expand...

That's the same card I have

core 1150
ram 5800
1.215v

Looped heaven demo for around an hour with no issues so I'm quite happy. Bump your volts up a bit. Shame these cards don't seem to do 1200+ on the core. I bet sapphire got all the best ones for the OC edition :rolleyes:
 
555BUK said:
MSAA does not hold 60fps on a GTX680. For both my GTX680 and 7850 builds I used FXAA because it provides almost identical image quality to MSAA, without the hit.

FXAA set to high provides the equivelent of 4-8x MSAA. Why decrease performance for no real gain?
Click to expand...

I do notice the difference using MSAA. I mean, it ain't huge by any means but definitely noticeable. Also my 680 can hold 60 FPS with it on 95% of the time. Anyway, all I meant was that the FPS numbers need to be considered against other benchmarks on the web which run generally with MSAA on and at 4x.

I wasn't trying to talk down the performance you're getting or anything - it is very impressive.
 
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