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Old 10-30-07, 05:27 PM   #5
walterman
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Join Date: Oct 2003
Posts: 1,525
Lightbulb Re: 8800GTX + Direct3D8 + Visual C++ + XP = Random Performance Increase

I found one way to reproduce the 'bug'.

I load my fav game, BloodRayne2, with my patch for FSAA (my vc++ project).

I start a new game, and i start to do 'alt-tab', between the game & desktop.

Each time, that i do alt-tab, there's an increase in the non-local videomemory usage of 6-7MB.

When, i reach 240-250MB (after 30-40 alt-tabs), there's a nice boost in the fps, from 90 to 100 fps (+-10%)

Just check my graph:



Why ?

I've no idea, but it's a interesting bug.

I tried without my patch, with just the retail game, and same result.

If you do this process 2 times, the 2nd time, the system doesn't free the non-local video memory usage, and the boost is permanent, and the funny is that it works for all the games.

If somebody knows how to report a bug to nVidia, this is one that they really should investigate. A 10% increase in performance for free.
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ASUS Rampage Formula X48 | Xeon 3350 @ 3.6 GHz (450x8/1.26v) | 4x1GB OCZ DDR2 PC2-6400 Reaper CL3 @ 900 MHz 3-4-4-15 | 1 x eVGA GTX 285 SSC | 1 x ASUS EN8800GTX (PhysX/CUDA -> Burnt by nVidia 196.75 driver) | X-Fi Titanium Fatal1ty PCIe | 1 x Intel X25-M G2 80GB | 2 x 750GB WD RE2 7500AYYS SATA2 16MB | Samsung SH-B083L SATA | Enermax Revolution 1250W | Samsung SyncMaster 275T 27" 1920x1200 | Thermaltake Black Armor | BloodRayne 2 FSAA Patch
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