welcome bro , wow nice clocks at stock voltage + the score
let's try another benchmark especially those build in games benchmark

owikh84
sorry cant test cfx 7970 with 13.5b and 3dm11 coz one of my 7970 dead, system unable to detect it.. I think due to WC leakage that happen recently. too bad as now only have one 7970

Nice OC and score bro, is that clock 1100/1500 entirely stable for 24/7 for gaming?

ya I hope so,thanks Kevin. chance is very2 slim ..maybe I'll use it in prodigy if non-ref or sell it off later saving for next-gen AMD? really cant wait haha

Hi bro,

Yes try that first, 100MHz on Core and Mem should be okay at default voltage..however if your system is unstable after oc your 7870XT, try to drop back the core by 10MHz and rerun crysis3..if after couple of hours without issue then you're good to go. If games still crash or driver reset etc repeat the step again and again until your system is stable during gaming session.

Happy overclocking!

you cant max out..well you can but of course your system wont stable at that clock, normally for 7870XT iirc should be able to max up to 1100MHz core at stock voltage, Mem maybe 1650 is the max, anyhow you may try them and see..watch the temps though, control fan speed proportional to core clocks.

If you want to OC higher than 1100MHz core, then it's time to overvolt your card but the risk is there once you overvolt it and I hold no responsibility

yeap bro the VDDC for core clock and MVDDC for mem clock but pls dont touch MVDDC if it's there in TriXx, not much of use anyway.. the result of too high overvoltage could be component burnts on PCB, normally they will accept the RMA but I cant guarantee that. It's up to them in the end, somemore would you want to wait for a month without a GC? hehe I wouldn't dare overvolt too much if I dont have a backup GC

how about you keep your core clock at 1075MHz while only resetting your mem clock..later if got time can play again crysis 3 or any graphic intensive games/benchmarks to check for stability. It could also be due to the GPU temp, dont forget to monitor it using MSI AB's OSD during gaming..increasing or set a custom fan speed profile will help also.

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

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.

umm..what I mean is using a software like MSI afterburner or GPU-Z to monitor gpu temps during gaming sessions..the download link is already at first post and you've to turn on OSD in MSI afterburner setting..also click the checkbox unlock voltage monitoring on settings page if you want to monitor Vddc also



This post has been edited by shepard: Jun 23 2013, 09:59 PM

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

This post has been edited by shepard: Jul 2 2013, 08:19 PM

After quite some time didn’t play around with benchmark, got time to do so and here's some scores:

7970 GHz @ 1185/1600
cpu 4.8GHz
13.6 b2 driver

3dmark11 - http://www.3dmark.com/3dm11/6910318


Valley 1.0 (Extreme HD)


Heaven 4.0 (Max setting 1080p)


This post has been edited by shepard: Jul 24 2013, 11:57 AM

Wow..ok now going to run heaven 4.0 benchmark on 13.6b2 first and compare with latest 13.x above afterward..let's see if there's really ~11% improvement ..thanks Kevin

Lol bro no improvement at all..same result here with heaven 4.0 also 40.5FPS with 13.x driver..

bro did you mean you already tried lower your core clock from 1120 and NFS MW game still crash? how about running GPU at stock clock, does the game crash also?

nice score guys..but your cpu still holding back your HD7970 true potential i guess.

just now I ran heaven 4.0,latest 13.11b3 driver... cpu at 4.8GHz, GPU 1250/1750MHz (Vcore 1.26v):




This post has been edited by shepard: Oct 23 2013, 04:25 PM

I'd love to see someone posting an R9-290x and 290 benchmark scores here later on