640MB 8800GTS SLI vs 512MB 8800GT SLI - when cpu limited

[eva2000]

Anyway, so far 640MB 8800GTS SLI had SLI issues with scores in SLI oc'd being same as non-OC'd SLI scores. 169.21WHQL fixed this http://www.xtremesystems.org/forums/showthread.php?t=171027 but now with 512MB 800GT SLI similar issue occurs with 169.21, 169.09, 169.02 and 169.28 betas.

Ntune 6.x beta was fine on 640MB 8800GTS SLI with 169.21WHQL drivers. But with 512MB 8800GT SLI, Ntune won't let me set clock speeds between 729Mhz and 756Mhz GPU. Any setting between 729Mhz and 756Mhz = 756Mhz GPU clocks. Both my 8800GT cards do 742Mhz on GPU but I couldn't select it in Ntune 6.x beta. Rivatuner 2.06 won't overclock the 2nd 8800GT i.e. set 742Mhz GPU and only 1st 8800GT is set to 742Mhz GPU while second card is still at default 648Mhz.

So going to try using Nvflash to backup my 8800GT OC bioses, edit the clock speed to 742/1836/2000 and flash them just for benching to see if I can finally get them working overclocked in SLI mode. :)

System

Intel Core 2 Duo E6850 L723A347
Scythe Infinity + 120x25mm Spire 96cfm fan + MX-2 TIM
Asus 680i Striker Extreme 1303 bios (updated from 0402) - supplied by Asus
Thermalright HR-05 on NB + Coolermaster 70x25mm 0.12A fan(680i week 36, 2006 (http://i4memory.com/reviewimages/motherboards/asus/680i_strikerextreme/chipsetcoolers/photos/680i_striker_hr05_ttes2_022.html)) and Thermaltake Extreme Spirit II on SB (week 40, 2006 (http://i4memory.com/reviewimages/motherboards/asus/680i_strikerextreme/chipsetcoolers/photos/680i_striker_hr05_ttes2_020.html)).
2x 512MB Inno3D 8800GT OC Edition stock hsf + 169.09 Beta
2x1GB OCZ PC2-8000 Titanium Alpha VX2 supplied by OCZ
80GB Hitachi 7K80 SATA
LiteON CD-RW
1200W Silverstone OP1200
WinXP Pro SP2


@4050Mhz
2x 512MB Inno3D 8800GT OC Edition stock hsf SLI @742/1836/2000

3dmark06 = 18,649 http://service.futuremark.com/compare?3dm06=4397335
3dmark05 = 27,332 http://service.futuremark.com/compare?3dm05=3837793
3dmark2003 = 73,809 http://service.futuremark.com/compare?2k3=5663945

@4104Mhz
2x 512MB Inno3D 8800GT OC Edition stock hsf SLI @742/1836/2000

3dmark06 = 18,842 http://service.futuremark.com/compare?3dm06=4397853
3dmark05 = 27,694 http://service.futuremark.com/compare?3dm05=3837874
3dmark2003 = 73,961 http://service.futuremark.com/compare?2k3=5664067
3dmark2001 = 84,424 http://service.futuremark.com/compare?2k1=9309196
AM3 = 231,257

Compared with
E6850 @4104Mhz
2x 640MB Gainward 8800GTS SLI

3Dmark06 = 18,386 http://service.futuremark.com/compare?3dm06=4378904
3Dmark05 = 27,047 http://service.futuremark.com/compare?3dm05=3833309
3Dmark2003 = 66,131 http://service.futuremark.com/compare?2k3=5662451
3Dmark2001 = 82,921 (LOD = 4.3) http://service.futuremark.com/compare?2k1=9308566 / 82,560 (LOD = 4.0)
AM3 = 231,422

We can see how CPU limited SLI is especially in 3dmark06/05!

[eva2000]

Screenshots for 512MB 8800GT OC SLI below

@4050Mhz
2x 512MB Inno3D 8800GT OC Edition stock hsf SLI @742/1836/2000

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/450-600_5335_5-5-6-8-35_1.6-2.475-1.3-1.7-1.6-1.35/8800GT_SLI/3dmark2003_742-1836-2000_73809_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/450-600_5335_5-5-6-8-35_1.6-2.475-1.3-1.7-1.6-1.35/8800GT_SLI/3dmark2003_742-1836-2000_73809.png)

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/450-600_5335_5-5-6-8-35_1.6-2.475-1.3-1.7-1.6-1.35/8800GT_SLI/3dmark05_742-1836-2000_27332_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/450-600_5335_5-5-6-8-35_1.6-2.475-1.3-1.7-1.6-1.35/8800GT_SLI/3dmark05_742-1836-2000_27332.png)

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/450-600_5335_5-5-6-8-35_1.6-2.475-1.3-1.7-1.6-1.35/8800GT_SLI/3dmark06_742-1836-2000_18649_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/450-600_5335_5-5-6-8-35_1.6-2.475-1.3-1.7-1.6-1.35/8800GT_SLI/3dmark06_742-1836-2000_18649.png)

@4104Mhz
2x 512MB Inno3D 8800GT OC Edition stock hsf SLI @742/1836/2000

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark2003_742-1836-2000_73961_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark2003_742-1836-2000_73961.png)

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark05_742-1836-2000_27694.png

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark06_742-1836-2000_18842_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark06_742-1836-2000_18842.png)

LOD = 4.4
http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark2001_742-1836-2000_84424_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark2001_742-1836-2000_84424.png)

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/am3_742-1836-2000_231257_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/am3_742-1836-2000_231257.png)

[eva2000]

For 640MB 8800GTS SLI

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.6875-2.5-1.3-1.7-1.6-1.35/8800GTS_SLI/3dmark06_648-1637-2000_18386.png

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.6875-2.5-1.3-1.7-1.6-1.35/8800GTS_SLI/3dmark05-648-1637-2000_27047.png

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GTS_SLI/3dmark2003_621_1637_1000_66131.png

LOD = 4.3
http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.6875-2.5-1.3-1.7-1.6-1.35/8800GTS_SLI/3dmark2001_648-1637-2000_82921_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.6875-2.5-1.3-1.7-1.6-1.35/8800GTS_SLI/3dmark2001_648-1637-2000_82921.png)

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.6875-2.5-1.3-1.7-1.6-1.35/8800GTS_SLI/am3_648-1637-2000_231422_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.6875-2.5-1.3-1.7-1.6-1.35/8800GTS_SLI/am3_648-1637-2000_231422.png)

[Timbosan]

Nice scores and comparison :up:, its remarkable how similar they are (GT vs old GTS) especially in 01, 05 & 06. Wonder why there is a larger difference between them in 03?

[dinos22]

george can you measure your vcore under idle/load for 8800GT

[eva2000]

actually the way it's setup can't reach behind the cards properly as HR-05 NB heatsink basically sandwiches its fan between it and the back of the first card and SB heatsink I have on does the same for 2nd card. Will test when i move them back to single card on DFI X38 :)

Nice scores and comparison :up:, its remarkable how similar they are (GT vs old GTS) especially in 01, 05 & 06. Wonder why there is a larger difference between them in 03?

Cpu limited that's all in 05/06 heh

Managed to push 3dmark05/06 and 2001 a bit higher

3dmark05 = 27,749 http://service.futuremark.com/compare?3dm05=3838338
3dmark2001 = 84,722 http://service.futuremark.com/compare?2k1=9309239

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark05_742-1836-2000_27749.png

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/457-609_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark2001_742-1836-2000_84722_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/457-609_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark2001_742-1836-2000_84722.png)

Managed to take home some more trophies :D

http://img168.imageshack.us/img168/9850/am38800gtslirank3nx6.png

http://img185.imageshack.us/img185/9080/3dmark20038800gtslirankeh7.png

http://img241.imageshack.us/img241/6293/3dmark20018800gtslirankbs2.png

http://img242.imageshack.us/img242/1324/3dmark058800gtslirank1nx9.png

[revogamer]

grats :up: awesome scores

[eva2000]

thanks


Before and After

Before stock bios but bios modded to 742/1836/1000

3dmark06 = 18,842 http://service.futuremark.com/compare?3dm06=4397853

click image for full screenshot

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark06_742-1836-2000_18842_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark06_742-1836-2000_18842.png)

After bios modded to Exact Mode Extra VID = 1.22v with 742/1836/1000 clocks. Then overclocked to 756/1836/1000 using Rivatuner 2.06 for 2nd card and Ntune 6.x beta for 1st card.

3dmark06 = 18,944 http://service.futuremark.com/compare?3dm06=4435069

click image for full screenshot

http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark06_756-1836-2000_18944_tn.png (http://fileshosts.com/intel/Asus/680i_striker/results/infinity/E6850_L723A347_1/ocz/8000vx/9x/3_4div/456-608_5335_5-5-6-8-35_1.7-2.525-1.3-1.75-1.6-1.35/8800GT_SLI/3dmark06_756-1836-2000_18944.png)

Seems only SM3/HDR score benefited from the GPU clock bump from 742mhz to 756mhz :)

[Timbosan]

nice improvement, i also notice gpu clocks affect my sm2 & 3 score, and shader clocks affect the sm3 score the most.

This has confused me for a while, but can you explain why on the 8800GT the pixel & texture fillrates are 12.1 gb/s, and the mem bandwidth is 64 gb, but that it beats a G80 GTS which has pixel fillrate of 13.0 gb/s, texture fillrate of 33.1gb/s and 80 gb mem bandwidth? from the GPUZ specs the GTS should win - ive noticed this on almost every gpuz screeny of the G92 cards i see (except the really overclocked ones) just wondering why it is.