3) The on-board ATI graphics chip is about 2 cm away from the Slot1,
directly underneath the CPU's big heat sink.
Hmmm, sounds pretty suspicious to me. I would move it down a slot or
two...
"ON-BOARD" ATI graphics. its a all-in-one motherboard. can't move it.
re: emf radiation, I
On Thu, 28 Jan 1999, Louis Towles wrote:
I tried this a few months ago on our E series Gateways (ATI Rage Pro)
Prime95 LL test - yes interference
Prime95 factoring - no interference
Distributed Net Client - no interference
FPU benchmark (I think it was ZD winbench's FPU test) - yes
POV-Ray is a multi-platform freeware raytracing program that makes heavy use
of of the FPU. You can download it from http://www.povray.org/ .
The Windows version will actually even render a test scene for you upon
installation so you don't have to know anything about using the program.
Kent D.
I should have made explicit that "when we examined
the processor usage of the mainstream business
applications in the Winstone test, we found that
they do not use any floating point or MMX
instructions. Consequently, CPUmark99 doesn't
Ditto on Aaron's excellent comments. I've added some of my own.
From: "Aaron Blosser" [EMAIL PROTECTED]
Date: Thu, 28 Jan 1999 14:33:52 -0600
Subject: RE: Mersenne: Problems with ATI graphics
...
2) I don't think heat is the problem. The problems start within 5-10
2) I don't think heat is the problem. The problems start within 5-10
seconds of starting prime and stop as soon as prime is halted.
I never said anything about heat. I said electromagnetic radiation. It
emenates (sp?) from anything that is electrical. The more electricity,
themore
I have the same problem with a 400MHz PII Compaq, I think it has a ATI
graphics card.
James Escamilla
From: novarese @ job.cba.ua.edu on 01/27/99 04:11 PM
To: mersenne @ base.com
cc:(bcc: James Escamilla/TXN)
Subject: Mersenne: Problems with ATI graphics
Has anyone
I think we talked about this a while ago, but it manifested itself in
noisy RAM (or was it cache chips???). The conclusion was that it was the
extensive heat/EMF given off by a very active processor. Perhaps ATI video
cards are more susceptible to interference. Try moving your video card a
slot
On Thu, Jan 28, 1999 at 10:55:39AM -0600, Paul Victor Novarese wrote:
Could someone explain this "noisy" cache/RAM? That sounds like it may be
the problem.
As I recall, someone reported a similar symptom to what you're
reporting: i.e. a "noisy" video signal. One possible cause that was
Could someone explain this "noisy" cache/RAM? That sounds like it may be
the problem.
Since the cache on the PII's is built in, saying it's a cache problem might
as well be the same as calling it a CPU problem.
More facts for you detectives out there:
1) This is a Dell Optiplex. All
As I recall, someone reported a similar symptom to what you're
reporting: i.e. a "noisy" video signal. One possible cause that was
advanced on the mailing list was that Mersenne's heavy usage of the
FPU or cache might be generating enough interference to cause the
problem.
And besides,
PROTECTED]
Sent: Thursday, January 28, 1999 3:33 PM
Subject: RE: Mersenne: Problems with ATI graphics
One good test would be to use any other program that uses the FPU alot and
see if the flicker shows up. Can anyone think of another program that
would? I suppose any benchmark that tests FLOPS
Aaron Blosser wrote:
Could someone explain this "noisy" cache/RAM? That sounds like it may be
the problem.
Since the cache on the PII's is built in, saying it's a cache problem might
as well be the same as calling it a CPU problem.
The cache and integer bits of a PII are used with
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