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Cyrix 486 Runs 3D DOS Games Slow - Need Help

Descent

Hella Constipated
7,686
109
157
#1
Well, my ATi Mach32 video card came in today, and it didn't really help matters much. It still runs dog slow.

Doom, Duke3D, Descent, Comanche, F-22, and even Wolf3D run WAY too slow - about 8-10 fps. Wolf3D usually runs at 30.

I fucked with jumper config settings on my ECS UC4913 motherboard but it ended up only speeding it up by a little.

It has 256K cache installed, and the CPU is a Cyrix Cx486DX2-66MHz chip.

Can anyone help me? Is the Cyrix 486 chip a pile of shit, or are there any BIOS settings I should fuck with to increase this bastard's power? My old Compaq Prolinea Intel 486DX2-66MHz ran these with no problem - what gives?!

Specs:

Cyrix Cx486DX2-66MHz CPU
16MB Fast Page RAM
1MB ATi Mach32 VLB video card
Authentic Sound Blaster 16 ISA card (SETBLASTER loaded into UMB)
WD 850MB HD
Hitachi 8X IDE CD-ROM
Colorado 350 Tape Backup Drive
Teac 1.44MB Floppy Drive
ECS UC4913 Motherboard
Promise EIDE 2300Plus IDE/Floppy/Parallel/Serial/Game Port VLB combo card
Lava Computers ISA dual serial card with Startech 16550 UART
Best Data 2400B 2400 Baud Modem
Meridian 230w Power Supply
PC-DOS 7.0
Windows 3.1 IBM OEM version
 

Fire_ze_Missles

Martha Fuckin' Stewart
1,622
5
38
#2
My guess it is the actual CPU... being really old, and an attempt to overclock might be a bad combination... plus the fact that Cyrix, as a company, is practically non-existant.

And any google searches for your product result in all non-english returns. So, dump the processor.
 

UberSkippy

a.k.a. FuckTheBullShit
7,529
28
142
#3
Teh cyrix is teh shit. Or is just plain shit. Garbage. Junk. Turd in a bucket.

You'd be better to find an AMD 486 knockoff. Or an actual Intel 486 proc.

Yet again, 2 seconds on ebay

Do a search on ebay for 486DX2 You'll get a number of hits that are dirt cheap.
 

Descent

Hella Constipated
7,686
109
157
#4
UberSkippy said:
Teh cyrix is teh shit. Or is just plain shit. Garbage. Junk. Turd in a bucket.

You'd be better to find an AMD 486 knockoff. Or an actual Intel 486 proc.

Yet again, 2 seconds on ebay

Do a search on ebay for 486DX2 You'll get a number of hits that are dirt cheap.
Thank you man. I already had another proccy lined up - I just wanted to confirm that my Cryix was crap and an AMD 486 would be better.
 

UberSkippy

a.k.a. FuckTheBullShit
7,529
28
142
#5
Descent said:
Thank you man. I already had another proccy lined up - I just wanted to confirm that my Cryix was crap and an AMD 486 would be better.
The intel would be even better.
 

BRiT

CRaZY
Founder
11,739
2,426
487
#7
If you want to run those games with a Cyrix brand CPU, you should be looking at 586 series of chips. When I was playing those games for the first time, that is what everyone was running. At the very least, we were running AMD/Intel 486-DX4-133s. The biggest improvement we saw with most of the games was with the video card. It had to support ModeX with good acceleration. Most were running 4 or 8 Meg S3-variants (916 or 964s if my memory isn't faultering).
 

Descent

Hella Constipated
7,686
109
157
#8
BRiT said:
If you want to run those games with a Cyrix brand CPU, you should be looking at 586 series of chips. When I was playing those games for the first time, that is what everyone was running. At the very least, we were running AMD/Intel 486-DX4-133s. The biggest improvement we saw with most of the games was with the video card. It had to support ModeX with good acceleration. Most were running 4 or 8 Meg S3-variants (916 or 964s if my memory isn't faultering).
Hmmm...not a bad idea. Thing is my mobo is an ECS and I have no clue about the supported voltages for chips. Fuck. And the AMD 5x86 chips for Socket 3 are 3.3v parts, but my Cyrix is a 5v part.

Also, I have no clue how to "re-jumper" the LCD to say "133" as opposed to "66" but I guess it could be worse.

I'm not running anything THAT demanding, a 66MHz 486 would still kick ass.

Also, the ATi Mach32 was the fastest VLB card I could find.