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Sapphire HD7970 OC With Boost safe overclocking tips?

post #1 of 22
Thread Starter 
Current Rig

CPU: i5 3570k @4.3GHz OC | Phanteks-PH-TC14PE.
Memory: Corsair Vengeance Low Profile 1600MHz
Motherboard: Z77 AsRock Extereme4
GPU: Sapphire HD7970 OC With Boost
SSD: OCZ Vertex 4 128Gb
HDD: WD Green 1.5TB
PSU: Super-Flower 700w Golden Green 80plus gold Modular
Case: Coolermaster Storm Stryker.


I would need some advice how to get some more "safe" bang for my buck from my GPU.
So no Ultimate Death OC's but something to get more out of the card.

Thanks in advance.
post #2 of 22
Use the software Sapphire Trixx. 4.6.0 (latest version). Bump 25Mhz on the Core Slider, and then bench with either Heaven 3.0/4.0. If you get artifacts/ or a BSOD, increase the voltage by .05v then bench again. Continue till satisfied biggrin.gif
post #3 of 22
Thread Starter 
What about the GPU memory? My memory is currently set at 1500MHz
post #4 of 22
Quote:
Originally Posted by horna212 View Post

What about the GPU memory? My memory is currently set at 1500MHz

You would rarely see any real world benefits of overclocking the memory. Try to push the core as this is where you'd see most increase in FPS
post #5 of 22
They memory normally scales well to in excess of 1600 on standard voltage, no real reason not to do it if your overclocking the core providing everything seems ok with no artifacting.
post #6 of 22
Thread Starter 
And what about the "Board Power LI" It's currently set at 5, Core Clock at 1050MHz and Memory Clock at 1500MHz, should i increase the Board Power LI and what does it generally do?
post #7 of 22
Thread Starter 
Well, yesterday I tried OC'ing but even adding 25MHz to the core gave me artifacts on Heaven Benchmark. I've read about Heaven benchmark and quite a lot have had this problem with heaven benchmark, but for example Valley Benchmark Extreme HD works fine and i could OC the card extremely well (1200MHz Core, 1500MHz Memory, temps under 80°C) and the benchmark passed, BUT after playing Farcry 3 for a while the card crashes and when I enter the game again it just crashes again and when I reduce the clocks a bit, it starts giving me artifacts. With default clock's it's fine.
Edited by horna212 - 2/19/13 at 2:45am
post #8 of 22
First Download the latest drivers for your card (If you haven't already) I recommend the Beta 13.2

http://support.amd.com/us/kbarticles/Pages/amdcatalyst132betadriver.aspx

Your Card might be throttling, try running a more aggressive fan profile. For some reason my Sapphire throttles around 75C which is really low (I think it might be drivers). Don't forget the raise the TDP limit to max. If that doesn't work try using MSI Afterburner.
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post #9 of 22
Quote:
Originally Posted by Skilletis View Post

First Download the latest drivers for your card (If you haven't already) I recommend the Beta 13.2

http://support.amd.com/us/kbarticles/Pages/amdcatalyst132betadriver.aspx

Your Card might be throttling, try running a more aggressive fan profile. For some reason my Sapphire throttles around 75C which is really low (I think it might be drivers). Don't forget the raise the TDP limit to max. If that doesn't work try using MSI Afterburner.

all the modern cards would start to throttle at that temps. Nvidia does it by reducing the core by 13Mhz (1bn) and so does AMD. Its not drivers, but a built in safety control
post #10 of 22
I know, but the cards used to be able to handle much more heat before they would throttle which is a bit disappointing. It really hurts Overclocking potential (at least on air). So try setting a more aggressive fan profile in Trixx. Also the throttle controls are built into Bios Drivers.
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