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Very Slow IBM

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First post, by candle_86

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So my IBM is very very slow, not sure what the cause is.

IBM Aptiva E 175
SIS 530 based board V75M
64mb PC-100
K6-2 380 4x95
Voodoo 3 2000 PCI
Aureal Vortex 2
RTL 8139 Network Card
20gb Hard Drive - Primary Master
DVD-RW - Secondary Master
Windows 98SE

Now whats going on even with drivers loaded for everything, any disk activity is sluggish, tested drive in another machine and its fine, I verified DMA is installed, and by sluggish even dragging a window takes ages, you can't click anything as the computer doesn't respond.

I ran everest home on it, and memory speed is clocking along at 99mb/s read, 89mb/s write, and 327ns latency which seems really wrong.

Anyone got any ideas? Is it just that its an SIS chipset

Last edited by candle_86 on 2017-02-06, 16:21. Edited 1 time in total.

Reply 1 of 15, by clueless1

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Strip the system and test again. Disconnect network card, DVD-RW, maybe even sound card. Eliminate variables.

Did you install chipset drivers?

Try different RAM if you extra sticks. If there's more than one stick, use one stick at a time, changing slots to see if there's a slot going bad.

etc.

The more I learn, the more I realize how much I don't know.
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Reply 2 of 15, by BSA Starfire

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I run a IBM SiS 530 based motherboard with a K6/2 450MHz. Performance is just fine. I mean it's not the fastest super7 chipset but it's certainly OK. My board is a ACER V75M from Aptiva.

286 20MHz,1MB RAM,Trident 8900B 1MB, Conner CFA-170A.SB 1350B
386SX 33MHz,ULSI 387,4MB Ram,OAK OTI077 1MB. Seagate ST1144A, MS WSS audio
Amstrad PC 9486i, DX/2 66, 16 MB RAM, Cirrus SVGA,Win 95,SB 16
Cyrix MII 333,128MB,SiS 6326 H0 rev,ESS 1869,Win ME

Reply 3 of 15, by candle_86

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I had 128mb of ram in the machine, but I took it down to 64mb upon learning the system can only cache 64mb which I thought would improve performance, but it made zero difference. So right now only a single 64mb stick, and the only stick under 128mb I own 🤣. But ill try everything else after work today.

I do have the same V75M board in my system.

I have so far replaced the 80pin IDE Cable with a 40pin Cable (its an AT33 Chipset anyway so I thought maybe, that made no difference

Reply 5 of 15, by candle_86

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SW-SSG wrote:

Is that a clean install of Win98? If not, maybe there's a rogue process taking up all CPU time?

Yes it's clean

Reply 6 of 15, by Deksor

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Is there cache on the motherboard ?

And also does the bios lets you tweak RAM timings ? With 100MHz FSB I usually put 2-2-2 instead of 3-3-3. This increase speed a little bit

Maybe the ram isn't liking munch the odd 95MHz FSB ? What if you overclocked your K6-2 to 400MHz ?

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Reply 8 of 15, by cj_reha

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When I had just gotten into retro pcs I was upgrading one and for some reason it was running way too sluggish and slow. I found the cause of the problem was a weak power supply, replacing it with a stronger one fixed it right up.

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Reply 9 of 15, by candle_86

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cj_reha wrote:

When I had just gotten into retro pcs I was upgrading one and for some reason it was running way too sluggish and slow. I found the cause of the problem was a weak power supply, replacing it with a stronger one fixed it right up.

Don't have that option, no half length power supply currently in my inventory

Reply 10 of 15, by lazibayer

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candle_86 wrote:

Don't have that option, no half length power supply currently in my inventory

Does V75M take regular ATX input? Just find an PSU with cables long enough to reach your machine's components from outside and make good support for it.

Reply 12 of 15, by BSA Starfire

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lazibayer wrote:
candle_86 wrote:

Don't have that option, no half length power supply currently in my inventory

Does V75M take regular ATX input? Just find an PSU with cables long enough to reach your machine's components from outside and make good support for it.

Yes, it's standard ATX power inputs, I have mine in a Microstar ATX mini tower.

286 20MHz,1MB RAM,Trident 8900B 1MB, Conner CFA-170A.SB 1350B
386SX 33MHz,ULSI 387,4MB Ram,OAK OTI077 1MB. Seagate ST1144A, MS WSS audio
Amstrad PC 9486i, DX/2 66, 16 MB RAM, Cirrus SVGA,Win 95,SB 16
Cyrix MII 333,128MB,SiS 6326 H0 rev,ESS 1869,Win ME

Reply 14 of 15, by jcarvalho

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oerk wrote:

Remove everything that isn't strictly needed for operation, and try again.

I suspect a driver as the culprit - I had issues with a Realtek 8139 in Windows 98.

I AM also putting my 5 cents on the. Nic card

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