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Can you swap CPU's without causing any OS problems?

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May 21, 2008 4:12:48 AM

When I had my computer worked on last, it had the motherboard and CPU replaced. I lost all of my windows date because of it. I believe it was due to the motherboard being replace though.

Essentially I want to know is can I swap an AMD Athlon 64 X2 5000 Dual Core for an AMD Phenom X4 9500+95W Quad Core and use the computer a few minutes later.

So are CPUs essentially plug and play or do they need abit of knowhow?
May 21, 2008 4:21:26 AM

Should be a plug and play operation. Never had to reinstall an OS after CPU change.
May 21, 2008 4:26:58 AM

yes you can. just make sure that the motheboard supports the phenom processor. i know that there are mobos that do not support phenoms.
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May 21, 2008 4:37:25 AM

Do you know the model of your motherboard? If not, go here and run this program and go to the motherboard tab and type what you see in your next post so we can help u do find out if your motherboard supports the Phenom quad core cpus.

http://www.cpuid.com/cpuz.php

DO NOT BUY THE CPU AND OPEN THE PACKAGE BEFORE WE FIND THIS OUT FOR YOU> YOU WILL BE STUCK WITH THE CPU IF YOU DO!!!
May 21, 2008 4:57:25 AM

I have done it twice by myself!It works even better!
May 21, 2008 5:16:18 AM

The motherboard is an Asus M2NVP-VM
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May 21, 2008 5:30:41 AM

I had this happen to me when swapping processor recently on Vista 64. I upgraded (switched out) an e8400 to a q9450. My BIOS version supported both processors. The OS failed to install drivers for the new processor. I had four processors showing under CPU in device manager, but in error. The dual core e8400 processor were still listed as well as two Q9450 processors (4 processors total erronously listed in device manager). The fix was simple:

http://support.microsoft.com/kb/930861/en-us





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May 21, 2008 5:42:05 AM

After banging my head on my keyboard trying to find the cpu compatability chart for your mobo. I find that your mobo doesnt support the Phenoms so you will need to get a new motherboard unfortunately. Good to know this before you buy!

http://support.asus.com/cpusupport/cpusupport.aspx
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May 21, 2008 5:42:56 AM

Well, that is disapointing. The links dont work if you copy and paste. Needless to say, we both found the cpu chart and Phenoms arent on there at all.

Sorry, but at least you know now.
May 21, 2008 12:41:17 PM

Thank you for all the help guys. I really appreciate it. Spending $200 on a new processor is one thing but another $200 on a nice new mobo is another. I suppose my only other option would be to upgrade an Athlon 5200 to Athlon 6400.

The reason I am doing this in the first place is that I suspect my 5200 is bottlenecking my 8800GT. An upgrade to a 6400 would be a nice improvement but would it make my 8800GT run noticably better?
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May 21, 2008 12:52:13 PM

It should help and would be a cheaper upgrade than overhauling your entire system. That is probably the best cpu you can upgrade to in your system without doing that.

Are you having problems or low frame rates in games?
May 21, 2008 1:02:05 PM

you don't need to spend 200 dollars on a board to run that, my ECS 780gma would run it just fine at $74.00. Depending on what is available to you ! Wait for the next cpu anyways, phenoms are a pile of crap !

Look here and see how the Phenoms lose even to x2's for most uses. Gaming at all, then forget wasting your money on Phenom junk !
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May 21, 2008 1:09:27 PM

While a faster processor may net you some increase in frames, it will be only a few frames per second. A complete platform change to say an e8400 would net you a few more frames. But again we are not talking anything earth shattering here.
If you have a 5200 X2, and an 8800GT and are not happy with the gaming performance you are seeing, it's the 8800GT that is not up to par with your expectations.
What are you running, at what resolutions, how much eye candy? While an 8800GT is a good gaming card and will suit most people fine, it is still a value minded gamer's excellent card and there are better GPU choices for hardcore gamers.
May 21, 2008 1:33:24 PM

badge said:
I had this happen to me when swapping processor recently on Vista 64. I upgraded (switched out) an e8400 to a q9450. My BIOS version supported both processors. The OS failed to install drivers for the new processor. I had four processors showing under CPU in device manager, but in error. The dual core e8400 processor were still listed as well as two Q9450 processors (4 processors total erronously listed in device manager). The fix was simple:

http://support.microsoft.com/kb/930861/en-us



Hmmm...I'd started with a Q9450...went back to an E6850...and then back to the Q9450 without so much as a burp on an Asus Rampage Formula.
May 21, 2008 2:35:28 PM

halcyon said:
Hmmm...I'd started with a Q9450...went back to an E6850...and then back to the Q9450 without so much as a burp on an Asus Rampage Formula.


Isn't that Rampage Formula great? Seems like it tolerates every mistake I make and just resets itself for the next try.
May 21, 2008 2:57:38 PM

sailer said:
Isn't that Rampage Formula great? Seems like it tolerates every mistake I make and just resets itself for the next try.


Yes indeed. I'm glad I spent the few extra $$ for it, its an extremely easy board to work with.
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May 21, 2008 3:16:54 PM

I've only changed CPU's once with this board, and Vista64. I reset the cmos only because i was running much higher vcore on my 2160 than my E3110 is capable of handling(and didnt want to risk anything). Surprisingly I've changed out quite a few things major things and Vista has not complained.
May 21, 2008 3:33:21 PM

Ive replaced the CPU in my crappy ABIT KN9 twice with no problems.
May 21, 2008 3:39:55 PM

the x2-5200 and 8800gt dont sound like too much of a mismatch. what games at what resolutions? how much ram? Is your gt an overclocked version?
May 21, 2008 4:35:52 PM

You shouldn't have any problem swapping out your CPU.
May 21, 2008 5:28:50 PM

My system played just about every game I wanted to play very well. It did crysis on high settings with only abit of fps problems during one scene in the game.

The game I am playing now that seems to be thrashing my comp is Age of Conan, the new MMO, I am stuck to medium settings with the view distance turn up to half and a resolution of 1280x1024. I get 35 fps or so in towns and around 50 fps outside of towns.

On high settings I had far too many fps issues for it to be playable.

The 8800GT is stock OC'd and I have 3 gigs DDR2 ram. My system is well beyond the recommended settings.

If the CPU isn't the problem as most you have suggested, I suppose my next option is a 2nd 8800GT. But if I had to do that, my next question is would all the CPU bottleneck two 8800GTs?
May 21, 2008 6:10:10 PM

Yes and no at the same time. If you're switching from say a Phenom B2 any speed to a phenom B3 you can. Same for switching from an Athlon X2 4200+ to an X2 6400+. It really depends on the speed difference between the hyper transport speeds. You can't switch from a k8 to a k10 without causing windows to become unstable, because of the HT speed change from 1000mhz to 1800-2000Mhz.

The same goes for Intel based Machines. You can upgrade processors without issue as long as they both use the same FSB speed. If you upgrade from a processor that uses say a 800Mhz FSB to a 1066Mhz FSB it will cause windows to randomly lock up when trying to run any programs.

Either way in some cases you'll end up with random BSOD's until reinstalling windows.

Also the same comes when switching from a single core to a dual/quad, because of the different hardware abstraction layers used for the two by windows.
May 21, 2008 8:59:58 PM

Age of conan is still beta, blus you need to figure it is gonna stutter a bit over the net, I'd wait till the final client is released. Just my 2 cents.
May 21, 2008 9:32:12 PM

AoC was release to the public May 20th...unless you mean the servers are still beta or something like that.
May 22, 2008 12:56:04 AM

No, I wasn't aware it was final yet.
May 22, 2008 6:38:49 AM

redvandam said:
The reason I am doing this in the first place is that I suspect my 5200 is bottlenecking my 8800GT. An upgrade to a 6400 would be a nice improvement but would it make my 8800GT run noticably better?


Another solution would be to game at a higher resolution. I'm bottlenecked right now with a 17" CRT and the CPU/GPU combination in my signature, but it won't happen once I get a 24" LCD this fall.

I also recommend the 780G boards and an 8750. I'm switching my CPU over to a Gigabyte 780G board this next weekend and then getting an 8750 when I can afford one. It's reported to overclock to 2.8 nicely and, unlike the 125 watt Phenoms, it's fully supported on every 780G board I looked at.
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