*** NVIDIA 8800GT OVERCLOCK ***

[JBT]

ahhh man, I was expecting my on Thurs now Fedex is saying Friday eVGA SC on the way...

 

[imported_Shaq]

My OC'd temps are actually lower than stock since I bumped the fan speed up. 64% fan speed has no whine and dropped the idle temp from 51C (stock) to 47C (OC). Idle fan speed @ stock is at 29%. I have yet to get it over 68C OC'd which is cooler than the 320 Fatal1ty was @ 90% fan speed. Not too bad I think.

In Crysis demo @ 720P--everything on very high except water, shaders, shadows and post-processing on high and added parallax occlusion mapping and sunshafts-- it stays above 30fps the whole time. I'm in XP with the ini hacks. On the GTS 320 the intro cutscene would drop to 15fps and battles were about 25fps. It never went above 50fps. With the GT looking skyward I get over 100fps. They designed this card for Crysis obviously.

 

[Cybernetic]

I got 720/1900. If mem higher than 1900, get crash when run 3dmark05 or 06. I try for many times but the results was bad. Anyone like me ?

My card is XFX and use 169.02 Forceware + RivaTuner 2.06.

 

[lil buttercup]

I am hoping my super cooler will overclock higher


lol BTW this is swtethan, I'm on my fiance's account.

 

[praesto]

please write which cooling solution you are using along with your clocks, and temps aswell . The more the merrier!

 

[alcoholbob]

Hey Shaq how are you changing the fan speeds? And setting them to a specific %?

 

[imported_Shaq]

Rivatuner does it all.

 

[alcoholbob]

Is there a tutorial for what the commands should be? Last time I checked Rivatuner (I think it was the 2.02 version) it was just a blank field for Fan speed among other things. I don't know what to actually type to change the fan setting.

Do you just type "60%" in the empty field, or do you type in a specific number like "5000rpm" or what? I was typing in a bunch of random stuff and nothing ever seemed to change on my card.

 

[imported_Shaq]

There are FAQS at guru3d.com. There are two sets of pull down menus. The top one gets you to the low-level fan control where you set fan speeds and the hardware monitor among other things. There is a slide bar that you use to set it. The bottom pull down menu has the overclocking menu where you can set core,shader and memory separately since version 2.05, but you need 2.06 for 8800GT support.

You can have Rivatuner set fan speed and OC when you boot up windows or have it only boost OC and fan speed when in 3D mode (games).

 

[P229SAS]

Where are you getting Rivatuner 2.06 from? The official Guru3D page shows 2.05 and there was a thread in their forums created that got people banned for some reason.

 

[imported_Shaq]

I followed a link from somewhere. I saw a post where someone said it was leaked but I never saw anything else to that effect so I figured it wasn't true. I imagine you can search for it.

 

[chizow]

Running at 700/1000 right now on my EVGA 8800GT SC, which is the same speed as the SSC. Everything else is stock as I'm using nTune until RT 2.06 is released. Gonna play some LOTRO for a few hours but so far so good.

Also ran a few quick 3DMark06 runs, although they're using different drivers because RT 2.05 doesn't OC with the 169s.

GTS 640MB 621/1000 163.75 = 9435
GT 512MB 650/900 169.04 = 10,859

I'll try to do more testing and some game benches with both once RT 2.06 is out. Just gonna see what a stable OC is first.

 

[HostofFun]

Originally posted by: Shaq
I followed a link from somewhere. I saw a post where someone said it was leaked but I never saw anything else to that effect so I figured it wasn't true. I imagine you can search for it.

It was indeed leaked... it can be found though . Works a treat!

 

[Cybernetic]

Originally posted by: P229SAS
Where are you getting Rivatuner 2.06 from? The official Guru3D page shows 2.05 and there was a thread in their forums created that got people banned for some reason.

I search from google in a few days ago.

 

[alcoholbob]

Originally posted by: Shaq
There are FAQS at guru3d.com. There are two sets of pull down menus. The top one gets you to the low-level fan control where you set fan speeds and the hardware monitor among other things. There is a slide bar that you use to set it. The bottom pull down menu has the overclocking menu where you can set core,shader and memory separately since version 2.05, but you need 2.06 for 8800GT support.

You can have Rivatuner set fan speed and OC when you boot up windows or have it only boost OC and fan speed when in 3D mode (games).

Bleh...seems like my 7800GT does not support different fan speeds...I can either set one speed or the other, can't change the other values for 2D or 3D...

 

[imported_Shaq]

Originally posted by: chizow
Running at 700/1000 right now on my EVGA 8800GT SC, which is the same speed as the SSC. Everything else is stock as I'm using nTune until RT 2.06 is released. Gonna play some LOTRO for a few hours but so far so good.

Also ran a few quick 3DMark06 runs, although they're using different drivers because RT 2.05 doesn't OC with the 169s.

GTS 640MB 621/1000 163.75 = 9435
GT 512MB 650/900 169.04 = 10,859

I'll try to do more testing and some game benches with both once RT 2.06 is out. Just gonna see what a stable OC is first.

I look forward to seeing what the SC can do. From what I've seen so far the core can OC to 730-740. I'm wondering if the SSC can go even higher.

 

[chizow]

Hmmmm I'm not sure if the different vendor cards would yield different performance levels unless EVGA somehow managed to hand-pick or get preference on reference boards. From the reviews, all the boards looked to be the same along the lines of previous releases where board partners essentially buy reference boards and rebadge them for retail sale.

That being said its a bit odd you were seeing artifacting/instability with memory clocked @1000MHz. But also I think you said you were using RT 2.06 beta, which may also be overclocking the shaders proportionate to the core/clock and causing problems. I'm only using nTune to OC and based on the 163s and nTune, it locks the shader clock and allows adjustments to the core/memory based on that locked value.

I'll try and bump it up a bit though, although I don't really want to without RT's full OC'ing functionality. Was raiding last night so I didn't want to risk bumping it up too much and causing instability, but I'll try and get up to 730/740. At auto fan speed and 700/1000 load temps didn't break 70C under load in LOTRO. That's slightly higher than my GTS @ 621/1000 @ 80% fan speed in my Antec 900.

 

[imported_Shaq]

Well the SSC version should OC higher because not all cards can do 700/2000 and there must be a little headroom unless they want lots of RMA's. Usually there isn't much cherry picking of parts on release day, but it seems it's a little different this time.

 

[nitromullet]

I tried pushing mine to 700/1750/2000 with Gainward's Expertool. it would run 3DMark06 just fine, but it wouldn't complete the Crysis GPU benchmark at those clocks, and it gave me artifacts on the desktop after I rebooted. I'll have to toy with a bit more when I have some time.

 

[imported_Shaq]

Sounds like the memory needs to go down to 1950 or so. I can pass 3DMark06 at 710/2066 but Crysis crashes after 10 minutes at those memory speeds. What version do you have?

 

[iluv2fly]

It would be interesting to look at the SSC versions Bios. Mabe it has looser memory timings and because of it overclocks higher?

 

[nitromullet]

Originally posted by: Shaq
Sounds like the memory needs to go down to 1950 or so. I can pass 3DMark06 at 710/2066 but Crysis crashes after 10 minutes at those memory speeds. What version do you have?

Just the vanilla EVGA 600/1800 card... I was gonna give 650/1950 a shot this evening.

Originally posted by: iluv2fly
It would be interesting to look at the SSC versions Bios. Mabe it has looser memory timings and because of it overclocks higher?

I'm also linking the shader clocks in Expertool. I wonder if they are clocking everything independently on the SSC cards.

 

[chizow]

FYI RT 2.06 out on Guru3D

Anyways, did a bit more testing with RT 2.06 and ran a few more 3DMark06 passes.

650/1625/950 = 10,859
700/1750/1000 = 11,399
730/1825/1000 = 11,651

Surprisingly not a huge difference in performance as you bump up the core unlike the G80. Mirrors TechReport's testing that shader core increases yield a bigger performance benefit vs. core clock increases.

Also, fan speed makes a pretty huge difference in terms of temps. High temps @730MHz with auto (29%) was 75C. High temps @730MHz with 50% was 68C. The fan is loud at 60%+....so pushing it past 50% for me isn't a really viable option. In comparison, I could run my GTS fan at 85% before it became audibly louder than the 120mm fans in my case.

Gonna see if I can push the core to 750MHz, then maybe play with memory and shader clocks a bit. I think in the end it might be better to lower core clock and push the shader clock instead.

Edit: Just finished running a pass at 756/1890/1000 = 11,465, but no artifacts, no crash obviously. Wondering if the fewer ROPs or less bandwidth is actually starting to bottleneck the GT at higher clock speeds. Gonna run Crysis Demo and see if I have any problems.

 

[imported_Shaq]

Have you tried ATItool? It is a little more sensitive than 3DMark06. If it won't pass that for a few minutes it won't be stable in games. Great OC you got. Can you not push the memory any higher? The 3Dmarks went down after that last run?

 

[deerhunter716]

How does the 8800GT at 700/1750/1000 compare to a 8800 GTX at stock?