SERIOUS PROBLEM WITH CPU-UPGRADE!!!

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funnyvlad

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Jan 7, 2006
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Hi

I had an old P4 2,4(533fsb) socket 478 cpu and bought a 2,8Ghz(used one). I have never upgraded a cpu but still I thought it would be easy.

I didnt do any changes in bios before I upgraded.

The following message came after I took out the old cpu and installed the new one


"Warning! CPU has been changed. or CPU Ratio changed fail

Please re-enter CPU settings in the CMOS setup and remember to save before quit!"


I didnt do anything of that cause I didnt understand. But the cpu worked fine(I thought) after it frozed 10 minutes later. I started the computer and still didnt do anything and the same thing happened. The third time I did some changes in BIOS(cant remember what) cause the BIOS is poor. Can´t do any changes.

Now the cpu is really fucked up and I couldnt keep it working for more than maximum 10 seconds before it frozens and not even ctrl alt del helps.

I changed back the old 2,4 cpu and it works better but still I´m worried

My question is: Do I have to do some bios changes before cpu upgrade? And if I do not. What do I have to do?

The BIOS is Phoenix -Award BIOS v6.00PG Rev A1 and

motherboard SL 85DRV-C
memory: 786 ddr(266)
gpu: gigabyte geforce 6800 silent pipe
 
You kind goofed by not doing anything after the first message. Going from 2.4 to 2.8 is not much of an upgrade. At one time I went from a cel 300A to a 600 on the same BX mainboard. Now that was an upgrade! Anyway in my case the bios did need to be updated with new multipliers. I'll research your situation and see what you need to do.

You may have bought a bum 2.8.

What MB and cpus exactly do you have?
 
Install the new CPU

Enter your BIOS

Reset BIOS defaults (in case you changed anything)

Save and Exit (Usually F10, Y, [Enter])

The above will fix the message. The message only indicates the CPU has changed, or changed multipliers (as expected), and generally entering the BIOS, saving, and rebooting clears the message.

Hopefully you went from a 2.4 GHz Pentium 4 (without HyperThreading) to a 2.8 GHz Pentium 4 with HyperThreading at least, on a faster FSB. [😛], in that case the upgrade is sort of justified,... I guess. Assuming your memory and mainboard are a suitable match for a 800 FSB P4 CPU.

Otherwise you paid good money to gain no more than +16% performance, which isn't what most people class as an "upgrade".

Once done go into My Computer, Properties and check the CPU is running at 2800 MHz... and not 1866 Mhz underclocked.

Done. :)

================================================
Can likely ignore below this, if the above works. Just things to look out for to avoid being ripped off in future:
================================================

Do you know the new 2.8 GHz CPUs specs ?, Does this match the mainboard / chipset you plan to install it in ?, etc

eg: What (FSB) Front Side Bus it uses ?, 533 (133 QDR) or 800 (200 QDR) are the most likely.

The settings you're after for a 2.8 GHz P4 would be either:
FSB 133 x 21 = 2800 or
FSB 200 x 14 = 2800

So you have 2 possible issues worth checking for:
1) Your mainboard doesn't support 21x multiplier - BIOS update may fix.
2) Your mainboard doesn't support a FSB of 800 MHz (200 QDR), and thus can't support 800 FSB CPUs.

================================================

PS: Running DDR-266 (PC2100) on a Pentium 4 is more likely the cause of your slowness, than your previous 2.4 GHz Pentium 4. I think you have received some bad advise just so someone could make a sale off you.

Pentium 4 - 2400/533 --> 2800/800/HT (???) or 2800/533 (???)
GeForce 6800 (possibly GT or GS model which is twice as powerful ?)
768 MB of DDR-266 (PC2100)

If you are a gamer (video card sort of implies you are) then the RAM is your performance bottleneck.

As you are using 3 sticks of RAM (not 2 or 4) then you are likely not using Dual-Channel either, if it is even an option on your mainboard... this would also contribute to low overall performance.

================================================

Little digging confirms the mainboard 'brand'/manufacturer is most likely Soltek - http://www.soltek.com.tw/ - their website makes it more difficult to find old product information and BIOS updates than most 🙁

Mainboard chipet appears to be a: VIA P4X266E ; but can't access www.via.com.tw for info currently, as it appears down.

================================================

UPDATE: (No warranty as to accuracy of this info, as not 100% of your mainboard model or revision).

Useful FAQ on Soltek website:
http://www.soltek.com.tw/soltek/FAQ/CQ-P4.htm

Manual (or part of it) appears to be at:
http://www.soltek.com.tw/soltek/download_file/Manual/socket478/VIA/85DRV4-C13/85DRV4-C-spec.pdf

Had trouble finding it earlier as: 85DRV4-C was the closest match, not 85DRV-C (without the 4, but still with the -C).

The 85DRV may not support 800 FSB CPUs, or Dual-Channel RAM, only DDR-266 single channel for 2.1 GB/sec peak.

In comparison Dual-Channel DDR-400 (PC3200) offers 6.4 GB/sec peak to match a 800 FSB CPU.

================================================

If you are looking to upgrade you would be better off with a new mainboard, faster RAM to match it (quantity and speed, vs just quantity), and associated new CPU. This may involve a new video card (PCIe x16 vs AGP 8X) and new case / Power Supply Unit aswell.

As you can see it is a vicous cycle, unless you prepare for it ahead of time.

If you have a 2800/533 then the system should be working using just the first section (far above). But then it wouldn't have the stability issues you mentioned would it ?

================================================

Contact: http://users.on.net/~darkpeace
 
You have a soltek board, with a via chipset (266 I think) If it is a P4b chip, you may be able to get away with installing the latest bios. If you have a 2.8 P4c in it little wonder it's not stable. It just doesn't support 800 mhz fsb chips. Nor is it likely to support the voltage requirements.
 
hehe I´m replying to myself??? Not really, actually to all of you. I´m grateful for all the suggestions and the answers. The reason that my question was as it was is that I wrote it very fast(in case the computer would freeze) so I didnt want to risk typing more time and facts.

The thing is that the old cpu is on sale in www.tradera.se(a swedish form of ebay) and if I sum up the difference between what I payed for the 2,8(533fsb, 133x21) and what I will get for the 2,4(533fsb, 133x18) is that the upgrade will cost me about 35$ maybe even less(the auction will be ended the 4th feb.) I KNOW that it isn´t a major upgrade but still it is an upgrade. I plan to buy a decent computer next year in spring and that will propably be an athlon on the new socket that will enter in april 2006.

I have never overclocked my cpu and it seems that I can get decent money for my old one cause computer components(even old) are still worth relatively much in Sweden(especially P4 from 2,0 and over).

I did the "deafult settings" thing on my old cpu(2,4) and it worked. I couldnt even make the old one work for over an hour which made me panic cause I´m dependent on internet and at least a computer that works so my final exam papers wouldnt suffer. BUT ´cause I´m selling the old cpu on e-auction I obviously want to make the new one work.

The 😳 embarrasing reason why the 2,4 didnt work after the fail with 2,8 is most propably that there wasn´t any connection between the cpu and the heatpipe which I discovered later 😳 . Maybe the same reason is for the new one?

Still I am worried and I haven´t had time to read your answers closely and I will do it now.

Even though I am a newbie about this cpu-stuff I still was very careful what cpu I bought and I double-checked with the salesman that the specifications was exactly as the old cpu(beside the higher frequency, hehe). I even had the knowledge that my mobo only supported 400/533 fsb so I wasnt so "stupid :roll: " and tried with a Prescott, 800fsb or any with HT support cause I knew that my mobo does not support those specifications. AND ´cause I have problem with a simple cpu upgrade then changing the mobo will be far more difficult for a newbie as me (as I know the majority of you will suggest). But I learn as long as I live and maybe in the future....

Anyway thanks again. :lol: THG original is much better than the swedish version cause I can reach a lot more users and readers.
 
"Otherwise you paid good money to gain no more than +16% performance, which isn't what most people class as an "upgrade". "

If he went from a 2.4B to a 2.8C, the differences are quite nice, assuming his MB supports 800 MHz processors, and 200 MHz DDR memory...

(A 2.8C would generally outperform the 3.06/533 models every day of the week in all benchmarks, but I worry that his mb may not support 800 Mhz FSB if thats what cpu he has.....)

Edit...I see not its a 2.8/533 model...should work in his mb)
 
TabrisDarkPeace said:
Install the new CPU

Enter your BIOS

Reset BIOS defaults (in case you changed anything)

Save and Exit (Usually F10, Y, [Enter])

The above will fix the message. The message only indicates the CPU has changed, or changed multipliers (as expected), and generally entering the BIOS, saving, and rebooting clears the message.


So you mean that after I have installed the new cpu I should go directly in the BIOS and set the settings for optimal defaults??
Click to expand...
 
Here I was hoping, partially, it was a 2800/800/HT.... at least it would be more of a challenge to get working. (Would've required a mainboard replacement as noticed during research - far above).

I guess it is all working cool now ?
 
I have tested the 2,8 cpu and it seems to work without problem(for 2 consecutive hour when typing). I even ran a 3dmark05 and boiled the cpu a bit. The temp. is about 28 C idle which is a bit higher than the 2,4 cpu(23 C) but the difference is mainly due to the fact that I have put very small amount of artic silver 5 paste just in case the cpu wouldnt work.

I have a huge Zalman heat sink so I know that the temp. is admireably low in idle.
 
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