Question : Problem: Performance difference in old Dell Dimension 4600 versus new Dell SC440

Hi,
I replaced a customers Dell Dimension 4600 running Windows XP/Home with a new Dell SC440 PowerEdge Server also running Windows XP/Home.
The customer says that the new computer is much slower than the old.
Im wondering if the slowness is due to the new hardware vs. old or other factors.
 

Here are the specs:
Dell 4600
CPU: 2.60 GHz
L2 cache:  512
Bus Speed: 800 MHz
Single core hyper threading.
Memory:  1GB PC3200 Non-ECC DDR.

Dell PowerEdge SC440 server.
CPU: Intel 2160 1.80 GHz
L2 cache:  1MB
Bus Speed: 800 MHz
Dual Core non-hyper threading.
Memory:  1GB PC5300 ECC DDR2 running at 667 MHz.

I dont know the equivalencies between a 2.60 GHz single core and a 1.8 GHz dual.  I assumed the dual core would be faster because its dual core. If its a server running as a desktop would that matter?  

The bios also says:  64bit technology: Intel EM64T
Would applications run better/faster if I installed  WIN/XP 64 bit rather than the 32bit version?

Thanks,
Al

Answer : Problem: Performance difference in old Dell Dimension 4600 versus new Dell SC440

The dual core 1.8 runs circles around the 2.6 P4, there's no competition. Did you reinstall XP fresh on the SC440? Do you see any slowness on the SC440?
I would not recommend the 64bit XP, You would need more ram to run the same apps in 64bit vs 32bit. There's no speed difference. 64bit allows the operating system to address more memory.