Sweper Posted May 25, 2009 Posted May 25, 2009 Just downloaded new Nvidia drivers for my Gforce 8600 GT. When runned the Blackdeath nrtk it seemes that I get lower FPS then before! But it could be a coincidence, maby. A little strange thogh... Has anybody tried to overclock a videocard? I googled and found an intresting site that explains two ways of doing it. http://www.pcstats.com/articleview.cfm?articleid=1803&page=1 Either with a program named: Coolbits or a program named: Rivaturner. Using Coolbits you first have to do a minor change in the Register. Rivaturner seems a bit easier. Anyone tried this? Quote
1. DDz Quorum FoolTrottel Posted May 25, 2009 1. DDz Quorum Posted May 25, 2009 I've tried Atitool to overclock my 8800GTS, just last week... (With AtiTool one can surely over clock an nvidia card, don't let the name of the tool fool ya) But, in the end, I got a result that was not really worth the while.. only +1 or so FPS... (just like all my OC attempts, it never leads to any real results...) (Today I got me a GTX 260 ... much better results... but... such an upgrade does come with a price tag... OC is much cheaper .. don't let my failed attempts get you down though, for some OC really works!) Quote
2. Administrators Jabo Posted May 25, 2009 2. Administrators Posted May 25, 2009 Good choice Sweper, that's the chipset I run in my rig - I'm running IL2 in 1680x1050, with the graphics settings turned up to til the knob fell off, and I'm still averaging 60fps in the Black Death track. I've been verry happy with it too. My card is the factory-overclocked BFG one, but I've read that the XFX cards are pretty rapid straight out of the box too, so you might not need to overclock it just yet Quote
Sweper Posted May 25, 2009 Author Posted May 25, 2009 Thanks for the info Jabo. What is strange, like I wrote above, is that I downloaded Nvidias newest firmvare, dated may this year, which they wrote should make almost every game **% faster. Not mine. I did som testing and in the Fraps-log below you could see the difference in avrage FPS. Dont know what changed. Fraps: 2009-05-15 20:43:50 - il2fb Frames: 7348 - Time: 145100ms - Avg: 50.641 - Min: 28 - Max: 62 2009-05-15 20:48:50 - il2fb Frames: 7345 - Time: 144564ms - Avg: 50.808 - Min: 29 - Max: 62 2009-05-15 20:52:41 - il2fb Frames: 7306 - Time: 144698ms - Avg: 50.491 - Min: 29 - Max: 62 2009-05-25 14:46:53 - il2fb Frames: 7205 - Time: 145166ms - Avg: 49.633 - Min: 29 - Max: 62 2009-05-25 14:50:45 - il2fb Frames: 7208 - Time: 144583ms - Avg: 49.854 - Min: 29 - Max: 62 2009-05-25 14:57:41 - il2fb Frames: 6468 - Time: 144316ms - Avg: 44.818 - Min: 27 - Max: 62 2009-05-25 15:01:38 - il2fb Frames: 6487 - Time: 144619ms - Avg: 44.856 - Min: 26 - Max: 62 2009-05-25 15:05:12 - il2fb Frames: 6136 - Time: 144650ms - Avg: 42.420 - Min: 26 - Max: 62 2009-05-25 15:13:46 - il2fb Frames: 6220 - Time: 144483ms - Avg: 43.050 - Min: 27 - Max: 62 2009-05-25 15:26:00 - il2fb Frames: 6233 - Time: 144180ms - Avg: 43.231 - Min: 27 - Max: 62 Quote
Rattler Posted May 25, 2009 Posted May 25, 2009 With your frames all maxed at 62, it looks like you have v-sych turned on. That's good for quality, but bad for framerates. If you're happy with around 60 max, leave it on. If you average too low, then turn it off. Quote
Sweper Posted May 25, 2009 Author Posted May 25, 2009 With your frames all maxed at 62, it looks like you have v-sych turned on. That's good for quality, but bad for framerates. If you're happy with around 60 max, leave it on. If you average too low, then turn it off. Forced the v-sync off. Now I got 57 avrage and 99 high. 26 lowest was same as before. Great improvment I will say. What does v-sync? Quote
Rattler Posted May 25, 2009 Posted May 25, 2009 Vertical synchronization (v-sync, v-synch, vbl-sync, vbl-synch) refers generally to the synchronization of frame changes with the vertical blanking interval. Since CRTs were nearly the only common video display technology prior to the widespread adoption of LCDs, the frame buffers in computer graphics hardware are designed to match the CRT characteristic of drawing images from the top down a line at a time by replacing the data of the previous frame in the buffer with that of the next frame in a similar fashion. If the frame buffer is updated with a new image while the image is being transmitted to the display, the frame buffer gives it the current mishmash of both frames, producing a page tearing artifact partway down the image. Vertical synchronization eliminates this by timing frame buffer fills to coincide with the vertical blanking interval, thus ensuring that only whole frames are seen on-screen. Computer games often allow vertical synchronization as an option, because it delays the image update until the vertical blanking interval. This can cause lowered frame rates due to latency (the period of the refresh rate at maximum), which might be undesirable in games that require fast response (e.g. first person shooters), although in practise it is impossible to achieve a visible frame rate faster than the refresh rate of the monitor. [from Wiki] Quote
Sweper Posted May 25, 2009 Author Posted May 25, 2009 ~S~ Rattler. If I had looked more carfully, there was an explanation in the Nvidia control panel where I changed the settings. Sometimes I dont Quote
2. Administrators Jabo Posted May 25, 2009 2. Administrators Posted May 25, 2009 Thanks for the intel Rattler, I've not had a chance to play with this setting yet this evening, but hopefully I'll get the chance before tomorrow night's shindig. Jabo Quote
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