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silenthi1l
03-27-07, 05:48 AM
Hello all,

1st time posting here in this forum.
Just purchased the above mentioned GPU (wanted either the EVGA 8800GTX or the Asus one but both were out of stock).

While i know that all 8800 GTXs are more or less the same when it comes to stock performance at 575/1800 Mhz so i bought it a few dollars cheaper than advertised retailed price.

very excited and tried to overclock the Leadtek card (based on a few reviews online) and guess what. According to NVidia's Ntune software, "Optimal" setting is at 547/900 Mhz!!! I was like "what the heck!".

Temperatures for the card according to NMonitor is constant between 68 - 72 degrees C and tops out at 72+ even with full load.

So, OC Gurus, any advice?! I feel like i got shafted in this purchase...sigh...

of course, other than this adnormality, the card is playing very well at maximum specs for games like FEAR and GRAW (nope, i'm not a FPS fan but FPS games are best to test out GPUs, imho)...

Thanks!

Xion X2
03-27-07, 09:30 AM
Pay no attention to "find optimal." Try increasing the core little by little and hit "test" to see if it passes. Do the same with the memory. Test it every time you make an adjustment. If it hangs, you know you have an unstable clock.

The best GTX's top out around 650/1100(2200), so I wouldn't go much past that. You may want to increase the core to around 625, and if it's stable, start increasing the memory and get it stable close to 1000. If it passes that, then go back to the core and increase it by increments of 10 while testing to see if it passes. Then, do the same with the memory again.

You could also use RivaTuner; I think it's a better tool than Ntune is. It's a little more complicated to use but not by much, and it gives you the option to save your adjusted clockspeed on startup--something I've never seen on the Ntune utility.

silenthi1l
03-27-07, 09:35 PM
Hello Xion X2,

Thank you for the advice! I tried before to manually tune using NTune but it fails each time. However, i took your advice and tried Rivatuner last night. However, due to my n00b-ness, i was unable to use it and decided to try out
AtiTools and used versions 0.26 and 0.27 beta.

Not sure if it means anything to anyone at all but thank you for the advice, i have managed to o/c the Leadtek 8800 GTX last night.

And as a "tribute" to those who gave good sound advice and for anyone who is interested, these are some stats and observations.

i installed both AtiTools (decided to go with the beta as it is newer and maybe more updated for the 8xxx series, flawed logic, i know) and Rivatuner (final version). However, despite Rivatuner being the more touted o/c app. i am not that used to it so decided to go with AtiTools.

Ok, enough preamble, the stats (based on AtiTools 0.27b)

Default spd / mem = 576Mhz / 900Mhz

Max Core Spd (before bluescreen) = 663Mhz
Max Core Mem (before bluescreen) = 1053Mhz [what's up with "3"s? :) )


Stable Core Spd @ 900Mhz Mem = 648Mhz
Stable Core Mem @ 576Mhz Spd = 1038Mhz

Run 3DMark06 Ver1.0 at 1600x1200, 4xAA @ 630Mhz/1000Mhz and achieved a score of about 8830 (ironic eh?). Did not loop and had some back apps running.

Temperature at default factory = 67-68 degrees C
Temperature at 630 / 1000 Mhz = 85 degrees C

Overall, i daresay that it is quite a decent overclock for the Leadtek 8800 GTX. Of course, i guess that everyone would have different gains on their cards.

i am satisfied with the potential gains, knowing that it can be done but have reverted to factory settings due to the high temperatures, at least until i can get some better cooling (additional side panel fans and/or gpu cooler).


Once again, thank you for the advice! Really appreciate it!

silenthi1l
05-02-07, 12:24 AM
Quick update: NVidia finally spent some time on their drivers and released the ForceWare 158.19 version last month on April 17, 2007.

i installed it a day after the release and saw some improvements.

yesterday was public holiday so while the wife and kid were out shopping, i decided to try a little o/c-ing with NTune just for fun.

Didn't use NTune to o/c my mobo as the mobo bios settled that for me
----> managed an o/c my E6400 cpu to 2.5Ghz (That's the Striker Extreme for you! Fuss free o/c-ing!)

But again, i digress, i clicked on the "Find Optimal setting" button for my gpu and to my pleasant surprise, it did not dump down my setting like last time.
Instead, NTune found that the optimum setting for my gpu to be what i found out manually with ATi Tools.

Core Spd = 648 and Memory = 1048 (2096)

In fact, using NTune, the core memory actually was more than when i manually tested it. Optimization of the drivers by NVidia? Hmmm....

So just a shout out to other 8800GTX users, we can now use NTune to properly configure our gpu

silenthi1l
05-02-07, 11:48 PM
Note: I am not trying to bag bragging rights nor had i a lot of time to spare. In another forum, a forumer asked me for some banchmarks for my GPU to compare against his EVGA 8800GTS "Superclocked" so i 'd thought i would share with the bros here who are considering a upgrade or may want to compare-contrast.

---------------------------------------------------------------
CPU E6400 @ 2.13 GHz / 800 FSB
GPU Leadtek 8800GTX 576 MHz / 1800 MHz
---------------------------------------------------------------

3D Mark 2006 (Advanced Edition 1.0.2)

Ran:

SM 2.0 Graphics Test 2 of 2
CPU Test 2 of 2
HDR / SM 3.0 Graphics Test 2 of 2
Features Test 7 of 7
Batch Size Test 2 of 2



Force Full Precision
VS Profile 3.0
PS Profile 3.0


Used NVidia ForceWare ver. 158.19 (ver. 158.22 just out today)
---------------------------------------------------------------

1280 x 1024 Resolution
No AA / 4x Anisotropic = 8936

SM 2 = 4158
HDR / SM 3.0 = 4329
CPU Score = 1888
----------------
4x AA / 8x Anisotropic = 8852

SM 2 = 4069
HDR / SM 3.0 = 4312
CPU Score = 1885
----------------
8x AA / 16x Anisotropic = 7961

SM 2 = 3776
HDR / SM 3.0 = 3479
CPU Score = 1882

1600 x 1200 Resolution
No AA / 4x Anisotropic = 8359

SM 2 = 3862
HDR / SM 3.0 = 3890
CPU Score = 1880
----------------
4x AA / 8x Anisotropic = 7011

SM 2 = 3312
HDR / SM 3.0 = 2828
CPU Score = 1883
----------------
8x AA / 16x Anisotropic = 7008

SM 2 = 3298
HDR / SM 3.0 = 2836
CPU Score = 1884

1920 x 1200 Resolution
No AA / 4x Anisotropic = 7972

SM 2 = 3695
HDR / SM 3.0 = 3573
CPU Score = 1882
----------------
4x AA / 8x Anisotropic = 6392

SM 2 = 2961
HDR / SM 3.0 = 2500
CPU Score = 1800
----------------
8x AA / 16x Anisotropic = 6387

SM 2 = 2957
HDR / SM 3.0 = 2496
CPU Score = 1882


F.E.A.R. (US Patch Edition 1.8)

CPU E6400 @ 2.13 GHz / 800 FSB
GPU Leadtek 8800GTX 576 MHz / 1800 MHz

---------------------------------------------------------------
Maximum Settings for both CPU and Graphics
---------------------------------------------------------------

1280 x 1024 Resolution
Without V-Sync
Min 39 Frames Per Second (FPS)
Avg 94 FPS
Max 219 FPS

96% = Above 40 FPS
4% = 25 40 FPS
0% = Below 25 FPS
----------------
V-Sync On
Min 35 FPS
Avg 55 FPS
Max 61 FPS

96% = Above 40 FPS
4% = 25 40 FPS
0% = Below 25 FPS

1600 x 1200 Resolution
Without V-Sync
Min 39 FPS
Avg 81 FPS
Max 204 FPS

96% = Above 40 FPS
4% = 25 40 FPS
0% = Below 25 FPS
----------------
V-Sync On
Min 29 FPS
Avg 51 FPS
Max 61 FPS

83% = Above 40 FPS
17% = 25 40 FPS
0% = Below 25 FPS

1920 x 1200 Resolution
Without V-Sync
Min 37 FPS
Avg 71 FPS
Max 177 FPS

87% = Above 40 FPS
13% = 25 40 FPS
0% = Below 25 FPS
----------------
V-Sync On

Min 29 FPS
Avg 45 FPS
Max 60 FPS

61% = Above 40 FPS
39% = 25 40 FPS
0% = Below 25 FPS

Final Fantasy XI Benchmark Version 3 (Max. Detail) = 7713

In case you are interested, i spent some of the time tweeking the GPU, overclocked the CPU by 15% using the Striker Extreme AI Overclock tools and here are the some of the benchmarks for reference.
---------------------------------------------------------------------
CPU E6400 @ 2.45 GHz / 920 FSB
GPU Leadtek 8800GTX 640 MHz / 2000 MHz
---------------------------------------------------------------------
3D Mark 2006 (Advanced Edition 1.0.2)
1280 x 1024 Resolution
No AA / 4x Anisotropic = 10145

SM 2 = 4724
HDR / SM 3.0 = 4881
CPU Score = 2160

** Everything as above but my system hung when i tried to run 3D Mark 2006 at 1600 x 1200 so i tuned the GPU down to 630 Mhz / 2000Mhz **
1600 x 1200 Resolution
8x AA / 16x Anisotropic = 7714

SM 2 = 3583
HDR / SM 3.0 = 3090
CPU Score = 2164

1920 x 1200 Resolution
8x AA / 16x Anisotropic = 7041

SM 2 = 3222
HDR / SM 3.0 = 2730
CPU Score = 2161

*** For F.E.A.R. and the Final Fantasy XI Benchmark 3, i tried to run the GPU at 640 MHz and 2000 Mhz again and it worked ***

---------------------------------------------------------------
Maximum Settings for both CPU and Graphics
---------------------------------------------------------------
1024 x 768 Resolution
V-Sync On
Min 49 FPS
Avg 58 FPS
Max 62 FPS

100% = Above 40 FPS
0% = 25 40 FPS
0% = Below 25 FPS

1280 x 1024 Resolution
Without V-Sync
Min 48 FPS
Avg 105 FPS
Max 242 FPS

100% = Above 40 FPS
0% = 25 40 FPS
0% = Below 25 FPS
----------------
V-Sync On
Min 45 FPS
Avg 58 FPS
Max 61 FPS

100% = Above 40 FPS
0% = 25 40 FPS
0% = Below 25 FPS

1600 x 1200 Resolution
Without V-Sync
Min 46 FPS
Avg 92 FPS
Max 220 FPS

100% = Above 40 FPS
0% = 25 40 FPS
0% = Below 25 FPS
----------------
V-Sync On
Min 30 FPS
Avg 54 FPS
Max 61 FPS

90% = Above 40 FPS
10% = 25 40 FPS
0% = Below 25 FPS

1920 x 1200 Resolution
Without V-Sync
Min 40 FPS
Avg 80 FPS
Max 192 FPS

98% = Above 40 FPS
2% = 25 40 FPS
0% = Below 25 FPS
----------------
V-Sync On
Min 29 FPS
Avg 48 FPS
Max 61 FPS

74% = Above 40 FPS
26% = 25 40 FPS
0% = Below 25 FPS

Final Fantasy XI Benchmark Version 3 (Max. Detail) = 8364

not sure if all these benchmarks would be helpful, i spent quite a while running the tests and ended quite late (330am) last night.

of course, as mentioned, i am not bragging or any thing and to be honest, i am 100% sure that many here would have much better benchmarks than i do but it was actually quite fun to see what my pc can and cannot do.

And hopefully, this might give an idea of how a system by a "average" dude runs and maybe this can assist some in making a decision on their system upgrades/overhaul.

btw, in case any1 is wondering it is all based on stock air coolers, the only concession is that i have a total of seven 120mm fans running (6 Scythe "F" series and 1 coolmaster).