Slowdown after upgrade

Hi guys.

I'm new to this forum but I hope this is the right place for this topic

I have searched through this forum, but have not found a simmilar thread.

I have just upgraded from an Asus P5Q/Intel C2D E8400/Kingston 4GB 800Mhz hyperx DDR2 based system to a Gigabyte MA790XT-UD4P/AMD Phenom II 955/A-Data Extreme 4Gb 1333+Mhz DDR3

Both systems had these components in common

- Windows 7 RC
- Antec Three hundred
- LC power 6550GP2 550W V2.v Silent Giant
- 1x Sapphire Radeon 4850 DDR3 512 M / Catalyst 9.6

After installing drivers and updating the MB BIOS so that the Phenom II got above 1.6 Ghz, I ran some enchmarks to see if the new system was faster. I installed Crysis to see if it performed better than on my former Core2Duo where it was totally playable on very high settings 1680*1050. But the gameplay was slower, choppier and hardly playable with the same settings. It's even slow with High or Medium details and it has a constant stutter every 10 seconds of play. The task mannager shows high spikes of usage on all four CPU cores and the GPU shows 99% usage and the thing still runs terrible, whereas the intel managed to do better with 2 cores, and same GPU usage. I have reinstaled everything and even tried AMD fusion which just made it worse (one CPU core active and GPU limited to 80% - weird)


I'm sorry for this long post but i tried to give all details (hope i have)

If anyone has any ideas/sugestions please let me know.


Thanx in advence

Best regards.

Yes it sounds as if you tried to run the new system without a full re-installation of Windows. Format and install from scratch.

I think he's saying it was only registering 1.6ghz until he updated the bios, or maybe it was coolnquiet kicking in, anyways, did you do a format and fresh install of windows when you upgraded your mobo and cpu?

Thank you for all your feedback, It really helped.

I read somwhere that if you disabled/enable Hyper Threading on an Intel processor that has this option, you would have to reinstall the whole system. A simple restart would not do the trick and Windows would report errors.

So here I have the same OS (not reinstalled) and a different platform/processor architecture.

I am doing a fresh install (from total format) of the system as we speak.....so will post my results.


Thanks again for your posts.

P.S. found many solutions on this forum as a reader and now I hope I will be able to provide some as a member.

Cheers