Date: Sun, 21 Dec 1997 02:09:18 +0100 From: Ollivier Robert <roberto@keltia.freenix.fr> To: hardware@FreeBSD.ORG Subject: Re: NCR810 (or 875) & Asus P55T2P4 & Overclocking ? Message-ID: <19971221020918.41035@keltia.freenix.fr> In-Reply-To: <Pine.BSF.3.96.971220123839.18666A-100000@shell9.ba.best.com>; from Burton Sampley on Sat, Dec 20, 1997 at 01:02:16PM -0800 References: <Pine.BSF.3.96.971220123839.18666A-100000@shell9.ba.best.com>
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According to Burton Sampley:
> Has anyone successfully overclocked the above hardware (the MB is rev 3.1
> BIOS rev 203)? I'm currently running a P5-233MMX at 266 (3.5X, 75MHz) with
Yes.
> an older Adaptec 2940 (BIOS rev 1.16, I think). When I try cranking it up
> to the 83MHz bus speed (3.0X, 83MHz ~= 250) the SCSI devices wont fly (but
> my EIDE drives will). This is on FBSD 2.2-stable.
Funny you're asking, I happen to have:
- an ASUS T2P4 rev. 3.1
- two ASUS SCSI cards, one SC-200 (narrow) and one SC-875 (ultra-wide)
- one K6-166
I'm running all these (with the addition of a Matrox Millenium) at
2.5x 83 MHz = 208 MHz which all cards seem to support very well.
> (providing the rest of my hardware can support the higher bus speed). Is
> the Adaptec really worth the extra $$$?
Compared to an SC-875, I don't think so. YMMV.
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FreeBSD 3.0-CURRENT #19: Tue Dec 9 20:17:10 CET 1997
root@keltia.freenix.fr:/src/src/sys/compile/TNKELTIA
CPU: AMD-K6tm w/ multimedia extensions (208.82-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x561 Stepping=1
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
real memory = 67108864 (65536K bytes)
avail memory = 63193088 (61712K bytes)
Probing for devices on PCI bus 0:
chip0: <Intel 82439> rev 0x03 on pci0.0.0
chip1: <Intel 82371SB PCI to ISA bridge> rev 0x01 on pci0.7.0
vga0: <Matrox MGA 2064W graphics accelerator> rev 0x01 int a irq 15 on pci0.9.0
ncr0: <ncr 53c875 fast20 wide scsi> rev 0x03 int a irq 9 on pci0.11.0
scbus0 at ncr0 bus 0
sd0 at scbus0 target 0 lun 0
sd0: <IBM DCAS-34330W S65A> type 0 fixed SCSI 2
sd0: Direct-Access
sd0: WIDE SCSI (16 bit) enabled
sd0: 40.0 MB/s (50 ns, offset 15)
4134MB (8467200 512 byte sectors)
sd2 at scbus0 target 2 lun 0
sd2: <IBM DORS-32160 WA6A> type 0 fixed SCSI 2
sd2: Direct-Access
sd2: 20.0 MB/s (50 ns, offset 15)
2063MB (4226725 512 byte sectors)
st1 at scbus0 target 4 lun 0
st1: <TANDBERG TDC 3600 =08:> type 1 removable SCSI 2
st1: Sequential-Access density code 0x0, drive empty
ncr1: <ncr 53c810a fast10 scsi> rev 0x12 int a irq 11 on pci0.12.0
scbus1 at ncr1 bus 0
sd11 at scbus1 target 1 lun 0
sd11: <MICROP 1624-07MZ1077801 HZ2P> type 0 fixed SCSI 2
sd11: Direct-Access
sd11: 10.0 MB/s (100 ns, offset 8)
642MB (1316751 512 byte sectors)
sd12 at scbus1 target 2 lun 0
sd12: <CONNER CFP1080S 3939> type 0 fixed SCSI 2
sd12: Direct-Access
sd12: 10.0 MB/s (100 ns, offset 8)
1030MB (2110812 512 byte sectors)
st0 at scbus1 target 5 lun 0
st0: <HP HP35480A 1009> type 1 removable SCSI 2
st0: Sequential-Access
st0: 5.0 MB/s (200 ns, offset 8)
density code 0x13, drive empty
cd0 at scbus1 target 6 lun 0
cd0: <MATSHITA CD-ROM CR-8004 1.1f> type 5 removable SCSI 2
cd0: CD-ROM
cd0: 1.9 MB/s (525 ns, offset 8)
can't get the size
--
Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 3.0-CURRENT #19: Tue Dec 9 20:17:10 CET 1997
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