Processor Comparisons


I have an opportunity to upgrade my windows server, not being a hardware man, i'm a little confused though.

Currently i have 2x 2.5GHz 12MB Intel® Xeon® Quad Core processors
the new server has 1x 3.5GHz Intel i5 Haswell processor

To my mind i suspect that my current server is more powerful as 2x 25 is more than 1x 3.5, but the current server is three years old and technology gets better.

Please can you explain to me what the difference is here, and which is the most powerful?

Thank you
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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
You have a i5 Haswell.  Is it the  i5-4690K or something else?

Passmark rates that at 7780 (see

The Xeon.  Is it the E5420 or something else?

Passmark rates that at 3479 (see

On a processor verus processor the i5 kicks butt.  It is at least twice as fast.  However you have two Xeons so on the right workload they might be able to catch the i5.

Might.  Not guaranteed.

Lots of other factors apply as well.  Memory, hard disk, operating system, application design, workload etc etc.  You'd really need to run benchmarking software to confirm the difference.

But in my opinion the Haswell will kick those two Xeons.

If you mean replacing the server (not only cpu),  CPU is not the only one parameter you should consider, there is bus speed, sata\ssd speed, memory bus and speed, more or better redundancy features, new O/S support and better software support for new server products (mainly by Microsoft.. see SQL server  for example) .

when you upgrade, even if the cpu has less GHZ then the old one it doesn't mean the overall performance of the new server will not overcome the old server performance. in addition, consider warranty - for the old server it may have passed and with the new server you get at least 1 year, 3 years most of the times.. depends on your reseller..
if you need a better answer please supply more details on your old and new server.. most chances my answer will not change.. if you have the budget and your old server is at least 3 years old I would recommend an upgrade.

If you mean only cpu replacement then your assumption is correct, the upgrade will give you better performance, but the change will be minimal, maybe you won't even feel it.

Hope this helps..
garethtnashAuthor Commented:
Hello Both,

Thanks for your responses, below i have attached links to the servers, for the overall view-

the current server is -

The new would ideally be

I'd  be running windows with SQL server on.

Appreciate your feedback.

Thank you
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andyalderSaggar maker's framemakerCommented:
"Xeon quad core" could be 5400 Harpertown or 5500 Nehalem EP or even a later generation, pretty much guesswork. I have a Ford 4 cylinder motorcar, now tell me if it's faster than a Honda motorbike.

Anyway you're running SQL so the CPU speed doesn't matter that much, what matters is the amount of RAM you have (mainly used as read cache) and how fast the disks are. Your old machine had 2x300GB disks so 10 or 15K, the new one has 2x2TB so probably 7.2K. It will be about half the speed of the old one.
OK, I have looked at the links and understand your dilemma, I must ask, why are you looking for an upgrade?
garethtnashAuthor Commented:
The current server is starting to lag, I'm not really a server person, just a developer, so don't know why...

And also - cost!
Most of the time bottlenecks for home servers are rarely CPU.  It is I/O. Slow I/O makes CPU utilization appear high, because the CPU is spending all it's time waiting for data.   Run the performance monitor and look at the I/O queue depth. If it is over 1 then it is waiting for I/O.  Spend  your money there   (after also investigating % of memory used to make sure that is also not a problem)
David Johnson, CD, MVPOwnerCommented:
looks like he is renting a VPS ..servers use ECC ram, consumer grade motherboards use cheaper ram non error correcting RAM. Can you not add more RAM to your package or move the database files off of the system disk onto either another SAS disk or the DATA drive (slower but may be faster since there is less disk contention)

When you say the current server is starting to lag have you even looked at the performance monitor to see where the hot spots are.. are you short on RAM or disk io's ?
Natty GregIn Theory (IT)Commented:
between the two processor you'll not see the difference, if is cpu only. speed is relative, meaning you can have a 3.5ghz processor with 800mhz fsb mother then everything runs at 800

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garethtnashAuthor Commented:
Hey All,

Thanks for the input here, although i am still a little confused :)
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