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Old 2008-01-27, 18:34   #1
JuanTutors
 
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"Juan Tutors"
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Default Flashed bios, now prime95 is slow

I flashed my bios, because my computer told me there was an update. Approximately since then, my prime95 copies have been running a little over 50% slower than normal. I don't know if that happened before or after flashing the bios, but I would like to go back to the original bios anyway, to see what happens.

How do I do that?
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Old 2008-01-27, 18:37   #2
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Is the computer a dual core one? I guess so because you said "copies". Make sure hyperthreading in "on" in BIOS

Last fiddled with by paulunderwood on 2008-01-27 at 18:41
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Old 2008-01-28, 05:07   #3
JuanTutors
 
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Quote:
Originally Posted by paulunderwood View Post
Is the computer a dual core one? I guess so because you said "copies". Make sure hyperthreading in "on" in BIOS
It's an amd turion 64. I don't think there's such thing as "hyperthreading" for amd.
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Old 2008-01-28, 06:20   #4
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Thanks for the extra information.

It is highly likely that the flashing caused some of the BIOS settings to be set to default modes which you will have to tweak to regain your computer's previous performance.

It is extremely difficult, for anyone, to guess what your BIOS' previous firmware number was, and even if you did re-flash it to its previous version you might still have to set BIOS settings.

You might need to do the clear CMOS procedure after flashing too.

Last fiddled with by paulunderwood on 2008-01-28 at 06:38
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Old 2008-01-28, 16:20   #5
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The last 3 boxes I bought were all "slow" when I started using them. All 3 had the same type of problems and were all BIOS related.

1. Is thermal clocking turned on? If this is an option, you'll usually find your system runs much faster with it turned off. However you do run a small risk of cooking your system if you let it get too hot. The idea for the setting is that it slows down the CPU if the temp gets above a certain level. Usually this level is set too low.

2. Is the memory speed set to "auto"? Usually such a setting results in a very slow memory speed. A bit of testing will usually show anywhere from 10% to 100% improvement in speed by using set configuration settings rather than letting BIOS detect "auto" settings.

3. Is the CPU settings set to "auto"? Frequently the CPU clocking is set rather bland. While overclocking is frequently the cause of problems, the BIOS frequently underclocks the CPU.

What it boils down to is that upgrading your BIOS invalidated the old BIOS settings resulting in a need to go through and redo your settings. It will require many reboots and much testing. Or you can simply accept your slow system and ignore it.
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Old 2008-02-03, 05:43   #6
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Quote:
Originally Posted by dominicanpapi82 View Post
I flashed my bios, because my computer told me there was an update. Approximately since then, my prime95 copies have been running a little over 50% slower than normal.
Maybe you have a really hot body. I've been flashed a few times in the past, and I've found it makes me pretty stupid for a little while. Makes me tend to bump into things, too. ;)
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