Messages in this thread | | | Date | Fri, 18 Feb 2000 01:20:45 -0500 (EST) | From | Walter Brisken <> | Subject | Athlon 650 + K7M is too slow! |
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Today I put together my new Athlon. It is a 650 MHz chip running on a K7M motherboard. The power supply is one recommended by AMD, and the RAM is PC133 which is certified by Accubyte to be good with Athlons.
Booting Redhat 6.1 (or the new beta, 6.1.92) give very poor memory bandwidths:
raid5: measuring checksumming speed raid5: MMX detected, trying high-speed MMX checksum routines pII_mmx : 78.105 MB/sec p5_mmx : 75.819 MB/sec 8regs : 92.202 MB/sec 32regs : 42.291 MB/sec using fastest function: 8regs (92.202 MB/sec)
The other weird thing is a two-tone siren that the PC speaker puts out that I cannot turn off. I thought it was the "Chassis Intrusion" but I can't seem to turn it off, even with the bios option for it.
We have another Athlon running in the lab here (500 MHz on an FIC SD11 board) and it outperforms this new machine by a factor of about 5 on floating point tests and a factor of about 10 on memory transfer tests.
I've tried the Red Hat 2.2.12 and 2.2.15pre kernels with the same disappointment. I think there might be a new BIOS out there, but can't find it. It is supposed to allow super-bypass, but that can't account for the slowness. I have even tried the memory from the 500 MHz machine. I can't think of any other things to do. I have experienced no stability trouble at all.
Is this a kernel issue? Any ideas would be appreciated. Please cc your responce to my email address.
Thanks!
-Walter
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