Hi Guys,

Anyone here tend to share their experience while overclocking this beast from AMD? Maybe we can use this thread as main platform for HD7xxx's owner to share and discuss on how great and awesome this card was  .
Anyone to share? Benchmark, Overclock, Gaming experience, FPS etc...we can share everything in this thread  .

A Sapphire Radeon HD7970 - the new KING of RED

Overclocking Tools(Use at your own risk):
1. MSI Afterburner 3.0.0 Beta 9(Latest)
Download Link
2. Sapphire Trixx 4.6.0 (Latest)
Download Link
3. Asus GPU Tweak 2.3.7.3 (Latest)
Download Link
AMD Radeon HD7970 Driver:
Catalyst 13.4 WHQL, Catalyst 13.5 Beta & 13.4 CAP1 Application Profile
AMD Radeon HD7970's Driver page

Monitoring Utilities:
GPU-Z 0.7.0 (Latest)
HWiNFO64 v4.16-1900 (Latest)
OC stability checking utilities (Use this at your own risk):
1. OCCT 4.4.0
Download Link
2. Furmark 1.10.6
Download Link
3. MSI Kombustor 2.5.2
Download Link
My OC Results:

gpu-z (1300/1685):

MSI Afterburner (1300/1685MHz @ 1.3v):

Benchmark at stock clock(925/1375):
3DMark Vantage (P32383):
http://3dmark.com/3dmv/3832180

My BEST VANTAGE SCORE with single HD7970 
HD7970 @ 1300MHz/1750MHz - P40058  Wow!!
CPU 2600k @ 4.85GHz
http://3dmark.com/3dmv/4035482

[attachmentid=3072410]
3DMark11 stock (925/1375) - P8003
http://3dmark.com/3dm11/2592460


3DMark11 - HD7970@ (1300/1685) - P10636
http://3dmark.com/3dm11/3239426
[attachmentid=3072412]

right now, i increase at 985 MHz and no crash so far.. While playing the crysis 3, my GPU temp is at 70 degree celcius max. For the fan speed, i set it as auto.

hmm that's quite low at default Vddc bro, anyhow why dont try 1050MHz and see..seems like a sweet spot to me..70deg is good already so maybe once you oc to 1050MHz, it'll go up to ~76-78deg and that's still fine though..
depends on each user also, some people will satisfy with few hours gaming like Crysis 3 or other 3d benchmarks application(Unigine,3dmark etc), some people likes to run stress test apps like occt,kombustor,furmark etc for few hours or days..result of course differ bro, to me as long as my system stable for extreme gaming maybe 3-4hours non stop that would be good enough..but of course have to monitor max GPU temp as well...Once we've familiar ourself with overclocking everything will go smoothly but still have to monitor certain things especially the temp, voltage..

Pls refer to the 1st post, the link is already there..just download, install and run it for few hours maybe to test your GPU OC stability

hahaha, now im increasing it little by little first to know where it crash, last time it crash at core 1075 and mem 1600.

yes we can do it as we like bro..i'm doing it by reducing the core slowly..any way will do
that's why I always OC one by one..first I'll find the max stable core, then find a max stable mem clock...later will combine both max OC and reduce the mem first by 10-15MHz, if not stable then reduce both by 10mHz and rerun the stability test again...normally should be okay one, be sure to monitor the temp though and you'll be fine.

lower the memory clock perhaps...OC your cpu to release some more fps

if u seeing soem weird lines or images appearing during stress-testing, most probably your gpu oc isnt fully stable. U need to lower either core/memory clock.

becos ur card is not capable to be overclocked that high, it really depends on the card, chip and the silicon themselves...like a cpu lottery if u get a golden chip u can use lower vcore for higher overclock...same concept applied...hope that helps...

u mean same gpu card tested under different pcs? I guess more or less u will get the about same clock..nt so sure thou

it will vary? one graphics card or two u mean?

It wont be the same OC results bro, different chip on graphics card means different OC capability even though same GPU model and same brand being used to compare. The  OC difference comes from each gpu being tested and not from other parts for your case.. for example:

AMD hd7970 reference #1 - highest oc @ stock volt - 1200MHz
AMD hd7970 reference #2 - highest oc @ stock volt - 1125MHz

both cards are same model and same brand from AMD but max oc for both card is differ because of different gpu(chip) inside..

hmm did you mean different brand GC but using same model number? I dont think this is even the case..unless same oem PC model number then yes. there will be a difference between every single graphics card whether it is same brand, same model, diff brand or diff model bro..some might have similar oc capability but it's random and or could be batch related so its more on to the luck..If we're lucky enough we might just purchase a very2 good OC card or if really unlucky we get the worst oc card

My conclusion is that as long as they are both different cards meaning they have different chips and have different oc capabilities even though they are same model. Can u get my simpler explanation?

Hey sifus,
I'm pretty new to Gpu overclocking. Need some help here. I've stabilise the clock at 1120/1525 for my 7970 without adjusting my voltage. Clock temp under 43c on heaven max stress test. Also, I've been running the stress test for 30mins to make sure things are fine. So everything passed. Unfortunately, when I try on game like NFS most wanted 2 it crashed. Fifa 14 and metro series all fine. Any comments?

Lowering the clock doesn't help. Running on 13.10beta 2 here

Thanks for the recommendation =). I'm under water cooling currently 

A LYN forumer is kind to send me the SAPPHIRE R9 280X TOXIC for review.



This card shows some decent mem overclocking. VRAM overclocked from 6400MHz to 8200MHz on air

Some latest benchmark score, personal best so far for single GPU 

3DMark (P)


3DMark11 (P)


3DMark Vantage


Valley 1.0


Heaven 4.0