P4 2.8E (1mb L2 cache) on an Asus P4P800?

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3in4

I was all set to buy a P4 2.8C until I saw the new P4 2.8E for only about $12 more. It looks exactly the same except it has
double the L2 cache. Looks like a great deal to me ($187 shipped) but I wanna make sure the Asus P4P800 (non-deluxe) can
handle it.

Thanks for your help..
 
3in4 said:
I was all set to buy a P4 2.8C until I saw the new P4 2.8E for only about
Click to expand...
$12 more. It looks exactly the same except it has
double the L2 cache. Looks like a great deal to me ($187 shipped) but I
Click to expand...
wanna make sure the Asus P4P800 (non-deluxe) can
handle it.

Thanks for your help..
Click to expand...

Hi,

If you go to:

http://www.asus.com/support/cpusupport/cpusupport.aspx

Then search by CPU type, it says that the P4P800 will support the 2.8E with
BIOS version 1014+...
 
Be carrefull. 2.8E is less powerfull than 2.8C with today applications. This
is because of pipes number which is higher in the 2.8E.

Regards

Sid

3in4 said:
I was all set to buy a P4 2.8C until I saw the new P4 2.8E for only about
Click to expand...
$12 more. It looks exactly the same except it has
double the L2 cache. Looks like a great deal to me ($187 shipped) but I
Click to expand...
wanna make sure the Asus P4P800 (non-deluxe) can
 
Sid LABDI said:
Be carrefull. 2.8E is less powerfull than 2.8C with today applications. This
is because of pipes number which is higher in the 2.8E.
Click to expand...


Well no it's mixed. Some apps are slower and some are faster on a
workstation. What I wondering about is whether the 2.8E would be better for
Windows SB Server 2003??
 
Well i am just running my home computer with windows xp. I will have 1gb of PC3200 DDR along with it. I do alot of gaming
also. So shoudl I get the E or C?
 
Hi,

No hesitation, please get a 2.8GHz (or why not a 3.2GHZ), northwood
version. This is the C version. Don't be affraid by the fact that it has
"only" 512KB of L2 cache memory. It will be more powerfull (at a given
frequency) and use less power (less heat). The goal of intel with the P4E
(or prescott) is to reach higher frequencies (4GHz and more).

Best regards

Sid

3in4 said:
Well i am just running my home computer with windows xp. I will have 1gb
Click to expand...
of PC3200 DDR along with it. I do alot of gaming
 
Sid LABDI said:
Hi,

No hesitation, please get a 2.8GHz (or why not a 3.2GHZ), northwood
version. This is the C version. Don't be affraid by the fact that it has
"only" 512KB of L2 cache memory. It will be more powerfull (at a given
frequency) and use less power (less heat). The goal of intel with the P4E
(or prescott) is to reach higher frequencies (4GHz and more).

Best regards

Sid


of PC3200 DDR along with it. I do alot of gaming better but
Click to expand...

Hi,

Tom Halfhill has a kind of rant in his column (Fast Forward) in the latest
MaximumPC Magazine (April 2004) titled "Why Prescott Sucks"...

I'm looking to build an HT-enabled P4 system, but I think I'm going to just
wait. It seems like the Northwoods may be better than the Prescotts now,
but I have the impression (and this is may be debateable) that the .09u
process will be the future direction.
 
Yes it will, but with future speeds (4Ghz and more) and better with future
motherboards, equiped with more adapted chipsets ie. i915... For today (6 to
12 next months), the best intel solution is definetly i865 or i875p chipset
with P4C northwood combination.

Sid
 
Sid LABDI said:
Yes it will, but with future speeds (4Ghz and more) and better with future
motherboards, equiped with more adapted chipsets ie. i915... For today (6 to
12 next months), the best intel solution is definetly i865 or i875p chipset
with P4C northwood combination.
Click to expand...


The difference between a P4 2.8E and P4 2.8C is small in workstation
performance. There is little to force a choice here.
 
Ya I think after what i have read here and on the web, i will stick with the 2.8C and save the 12 bucks.

Now if I could just decide between the P4P800 and the MSI Neo2-PFS (Platinum Edition), cause they look identical, except the
MSI board is $25 cheaper.
 
That kind-of surprises me.

I know that the P4 2.6GHz (400MHz FSB) and 512K of cache is much
faster than the Celeron 2.6GHz (400MHz FSB) and 256K of cache. I
had thought that the P4 designs just loved cache; the more the better.

I am not saying that you are wrong. Just that it surprises me.
 
You are right (and not). Let me explain you. The cache size is one thing,
the more you have the best it is.....but in the case of the P4E (prescott)
there are much more pipes which means latencies. That is why the P4E is less
powerfull than the P4C despite its larger cache size and its SSE3 commands
implementation.

Best regards

Sid
 
Oh, sorry, a pipe is quite different from a pipeline!
Prescott got 31 pipeline stages, ie. an instruction might
take 31 cycles to finish, but a new instruction can go into
the pipeline every cycle. This will give you the illusion
that every instruction can be finished in 1 cycle (or due to
multiple execution units, the processor can achieve > 1
instructions per cycle.) The pipeline stage execution will
break when a (branch prediction miss) branch instruction is
taken. So, a very deep pipeline may not be a very
attractive trick to increase performance.

Moreover, the cache latency of Prescott is worse than
Northwood, although Prescott gets more cache memory and it
will help to improve the cache hit rate.

My 2 cents.

Stephen Wong @ Hong Kong
 
Sid LABDI said:
You are right (and not). Let me explain you. The cache size is one thing,
the more you have the best it is.....but in the case of the P4E (prescott)
there are much more pipes which means latencies. That is why the P4E is less
powerfull than the P4C
Click to expand...

No, in some cases the P4 2.8E is faster and in some cases the P4 2.8C is
faster. It's about a wash.
 
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