Quad Core Slow

Custom / CUSTOM
March 28, 2009 at 04:02:01
Specs: Microsoft Windows XP Professional, 2.812 GHz / 3070 MB
Hi There, I have just upgraded from a dual core
AMD 2.6Ghz, 2 GB Ram with a 8800GT
graphics card to an AMD phenom 920 quad core and 3GB RAM with ATI dual 4850x2 Graphics card. No
change to OS or hard drives. The system
seems to be running a lot slower on startup
and slow starting applications. Any ideas

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#1
March 28, 2009 at 08:32:34
Have you watched the POST screens to verify the BIOS is configuring the hardware correctly?

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#2
March 28, 2009 at 11:27:43
quad core doesn't mean faster. is the phenom processor below 2.6 Ghz? quad cores allow you to run more programs more effectively (less crashes, smoother transitions etc.) but it doesn't make it faster and because they are putting more cores on single processor chips they have to downgrade the speeds to keep their energy usage and heat down. You should be able to check in your BIOS the heat, speed and how many hertz the processor is running at. Sometimes you can find a forum discussion on the bios settings of your processor and change them to increase performance w/o over-clocking it. You may have accidentally downgraded without knowing it in certain respects. Also, creating hard drives and processors isn't a precise art. sometimes you get a processor that is rated at one speed but is lower, kind of like how the nissan skyline gtr's engine is rated for 270HP but some people have thrown theirs on a servo and found they are 310+hp.

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#3
March 28, 2009 at 12:00:20
One thing you didn't mention was the motherboard. There are older boards that will accept the new Phenoms, but aren't able to take full advantage of them. Does you board support DDR2-1066? Are your running DDR2-1066? Does the board support the lastest HT bus at 3600MHz? Also, the Phenom II is fairly power hungry...it's rated at 125W. Considering you're running two 4850x2's, you'd better have a damn good power supply.

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#4
March 28, 2009 at 12:08:49
good spot. I forgot about that. with the 2 video cards it is suggested you have a 700w power supply especially if you have to use separate hookups (direct power from the power supply) to help power the video cards. I had a nvidia geforce 7950 Gx2 which was essentially 2 massive video cards screwed together and it required its own direct line of power to utilize all of its graphic capabilities. just checking but you are using the crossfire cable with those correct? I assume you are but just making sure you didn't forget it.

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#5
April 1, 2009 at 12:59:43
The motherboard is an Asus M3N-HT Deluxe, nForce 780a which supports Phenom Quad Core chips. The power supply is a 650W which is plenty I believe. The MB supports DDR2 800 and the max bus speed is 2600MHz.
The graphics card has 2 seperate power connections and i do not have crossfire enabled. The card can be used as one card

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