Dual core vs quad CPU?
-
We have an older quad hp/compaq proliant server which needs replacing.
The boss says a dell 2800 or 2900 with 2 dual core cpu's at 2.8 g or higher will perform as well.
In general does dual core perfrom as well as separate cpu's?
When the snows fall and the white winds blow,The lone wolf dies but the pack survives.
Once you've accepted your flaws, no one can use them against you.
-
From what I've seen benchmarked, a dual core is like 1.6-1.8 CPUs, depending on what you are doing.
Two dual cores might outperform your older quad, especially if it's at a much slower speed.
-
Add to that probably a faster bus and RAM and you should see better performance.. Plus it saves $ on licensing..
Thanks,
Rich
-
Do spluge for the highest L1/L2 cache (on-chip) you can get. But depending on how old your quad singles are there are plenty of other factors that will mean better performance for the dual-core.
-
A dual-core CPU may be equivalent to 1.6-1.8 single CPU's, but that doesn't mean it is equivalent to 0.8-0.9 x the performance of a 2-CPU system. It should perform better than a dual-processor single core machine because having the cores integrated reduces the latency of inter-CPU communication and allows better cache and memory management. I don't think I've read about any scenario where four single CPUs actually have an advantage over two dual-core or one quad-core.
When you add in the higher CPU clock rates, faster busses, and other architecture improvements I don't think you have to worry about the new system being slower. Get 64-bit SQL and max out the RAM, and you'll be amazed.
Viewing 5 posts - 1 through 4 (of 4 total)
You must be logged in to reply to this topic. Login to reply