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Rec.Autos.Simulators Archive

Cyrix 5x86 utility,overclocking,speeding up Gp2

1 post by 1 person · 09 Aug 1996 - 09 Aug 1996

I have Cyrix 5x86 100 Mhz, motherboard type - unknown ( I dont have = any!!! documentation ), Diamond Stealth 64 Video ( S3 Vision 868 chip ) = 1 Mb Dram, 16 Mb Ram ( non-Edo ). Before I started messing around with utilities my computer scored Cpu: = 161 and Video 164 in gp2log.txt. Loading Vesa 2.0 driver ( Sdd52.exe or Univbe52) gave me Cpu: 170 = !!!!?????, Video: 164 or 165. I was very surprised by Cpu score, so I = tried different Vesa 2.0 driver ( s3vbe302.zip ) and the Cpu score was = back to 161. Not much of an improvement, but still I would recomend = using Sdd52.exe. The next utility I use is S3spd302.zip ( as you see I'm listing = compressed archives so you can find them on the Net ). c:\> S3spdup.exe vesa+ vga+=20 gave me Cpu: 170 ( still with Univbe52 ), Video: 254 :-)))))))), but in = the game itself not a big improvement :-((((( .... so I belive that = graphic cards ( as long as they are at least middle class PCI ) don't = make much difference in Gp2. All 3d graphic cards are pretty useless ( = saying that I mean they don't perform that much better to justify mega = bucks spent on them than 2d cards in Gp2 ). It's an all different story = with games written specially for the chip that your 3d card has. BTW, = does anybody know if ICR2 for Win95 takes advantage of 3d accelerators = by using Direct3d drivers? Next step was to get some extra power from my Cyrix 5x86 100. I use = 5x86.exe utility. I think I have found a good ( and stable ) 5x86.exe ( = by P. N. Moss ) configuration: 5x86.exe btb=3Don lin=3Don fp_fast=3Don bwrt=3Don rstk=3Don lss=3Doff Cpu: 178 ( kewl, 8 points for a short line in your autoexec.bat ),Video: = the same 5 laps at Monaco and I decided to overclock my processor. Without any = documentation ??????? Yep!! After an hour or two I found four switches = that allowed me to change the bus speed. 75 Mhz - no thanks, 100 - the = same, 100 ( yes at startup it displayed 100 Mhz) - but the sistem was = unstable, so I thought this is it. I was running it at 120 Mhz, just my = motherboard didn't recognise that. Some Bios tweaking and it was very = stable, but slower than before I overclocked it!!!! That's = understandable, because I slowed down Sram and Dram access and Bus speed = in Bios. Just when I wanted to give up I remembered I guy that switched = his 3.3 V processor power supply to 3,5 V. I wanted to do that, but it = was only 3,3 V or 4 V !!!!!! So I changed it to 4 V. Turned it on and it = was working!!!! In Bios I only had to lower Dram access time by one step = and Gp2 is yet to crash. The chip is quite cool. Cpu: 213 and sometimes 199 ( I don't know why; but PO in game is always = the same. So processor doesn't slow down it's a processor test's fault. = ), Video: 275 or 274. I used turbo switch and keylock to overclock processor and chage voltage = to 4 V, so when I need extra power ( and with Gp2 who doesn't ???? ) I = turn of computer, press turbo, turn the key and my processor runs at 120 = Mhz with no problems. I'm currently writting this in Win NT at 120 Mhz :-)))))). I can play Gp2 in Vga with all textures on except sky, nothing in = mirrors with estimated 25 fps ( I use 19,6 fps ). I DO NOT encourage anyone to do the hardware speedup, but it's obvious = that $ 60 ( or even less ) processor can compare to pentiums ( I saw = P120 and his Cpu was only 225 ;-))), probably it wasn't configured well = ). I will probably buy Cyrix 6x86 when my 5x86 runs out of steam. Hope I = don't have to wait to long ( remember 4 V ) :-)))))))) =20 Borut "and I thought Senna was crazy" Srebotnik P.S. : I will let you know when it dies.

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