Crew Leeghoofd Posted December 30, 2014 Crew Share Posted December 30, 2014 (edited) lo all, we have all experienced the drop in Physx score when running high CPU overclocks. I had a quick session yesterday as I got hold off three 980 cards and the air pretesting at 4.6GHZ CPU OC gave me a higher Physx score as when running the CPU at over 5Ghz. It seems the sweetspot for a good Physx score is around 4.9GHz, though we have seen some top benchers having decent outputs at 5.4 and beyond. Physx scores: 4.6GHz was around 21.5K 4.9GHz score is 22.6 5.3Ghz score is 21.5K The combined score is also with hit and miss... The 3D11 benchmark is not stable in output for me... 3D11 version was version 1.0.1 and the latest System Info 3.338 installed What I've tried: Running different memory dividers ranging from 2600-3000MHz: no go Running different Uncore dividers from 4000-4600Mhz: no go Tried to run the Physx test before without any GPU OC, than OC GPUs and do a full run. The Physx score drops 200-300 points during a full run. What still to do ? Do we downclock the CPU OC for the Physx Test and than up again for the combined one ? Is it some software setting or the new System Info that hammers the score. Too bad this part of the test is so determinant for the final score. A good Physx/Combined score easily makes up for 50-100MHz less on the GPU clocks Edited December 30, 2014 by Leeghoofd Quote Link to comment Share on other sites More sharing options...
TaPaKaH Posted December 30, 2014 Share Posted December 30, 2014 A possible solution is to downclock the CPU only for the first few seconds of the physics test and then put the clocks back up. Although I've seen people do hassle-free full runs at 5.7GHz++ so it must be fixable. Quote Link to comment Share on other sites More sharing options...
Crew Leeghoofd Posted December 30, 2014 Author Crew Share Posted December 30, 2014 Well if you look at the bot many scores with high clocked CPUs have a weak Physx score Sam, even with some of the top russian OCers it is an issue... Maybe Petrovic has a fix Quote Link to comment Share on other sites More sharing options...
Gunslinger Posted December 30, 2014 Share Posted December 30, 2014 Well if you look at the bot many scores with high clocked CPUs have a weak Physx score Sam, even with some of the top russian OCers it is an issue... Maybe Petrovic has a fix It only happens with multi card set ups, you have to do as Sam says and down clock for the the start then jump it back up. It's usually 2 or 3 multis to get it to score right. :celebration: Quote Link to comment Share on other sites More sharing options...
Crew Leeghoofd Posted December 30, 2014 Author Crew Share Posted December 30, 2014 so quickly set eg Multi at 49, than during the PhysX run up again to normal speed ? Quote Link to comment Share on other sites More sharing options...
der8auer Posted December 30, 2014 Share Posted December 30, 2014 This worked for me: Open benchmark and run physx test only. After it's done run the complete test. Quote Link to comment Share on other sites More sharing options...
Crew Leeghoofd Posted December 30, 2014 Author Crew Share Posted December 30, 2014 (edited) Tried that Roman, think with the new system info we are s c r e w e d; Difference between a seperate run and the full run is 200-300 points less for the full one... but I'm scoring over 1.5K too low anyway for the CPU clocks Edited December 30, 2014 by Leeghoofd Quote Link to comment Share on other sites More sharing options...
Gunslinger Posted December 31, 2014 Share Posted December 31, 2014 so quickly set eg Multi at 49, than during the PhysX run up again to normal speed ? Exactly. :celebration: pause feature of Asus boards FTW. Quote Link to comment Share on other sites More sharing options...
l0ud_sil3nc3 Posted January 2, 2015 Share Posted January 2, 2015 So all is good with single card? Here's mine with cpu/cache at only 4.5 / 4.375, 25k should be doable at 4.6 I think so something is wrong for sure. http://hwbot.org/submission/2705326_l0ud_sil3nc3_3dmark11___performance_geforce_gtx_980_23526_marks Quote Link to comment Share on other sites More sharing options...
Gunslinger Posted January 2, 2015 Share Posted January 2, 2015 So all is good with single card? Here's mine with cpu/cache at only 4.5 / 4.375, 25k should be doable at 4.6 I think so something is wrong for sure. http://hwbot.org/submission/2705326_l0ud_sil3nc3_3dmark11___performance_geforce_gtx_980_23526_marks I've not seen the problem with a single card. If it stutters in the slightest at the start, that will be enough to drag the score down. Quote Link to comment Share on other sites More sharing options...
Massman Posted January 3, 2015 Share Posted January 3, 2015 This issue has been around for a long time. I remember having the same issues trying 4Way at Campus Party in Berlin in 2012. Quote Link to comment Share on other sites More sharing options...
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