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Best non C2D socket 775 CPU?

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26 Mar 2004
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A friend bought a cheapo 2.66 Celeron D Esys PC which has a foxconn P4M800P7MB socket 775 motherboard.
he's decided he wants to play games on it so he bought ram and a graphics card. now he wants to upgrade the CPU.

Manual says compatible with Pentium4, Pentium 4 EE and celeron D

Is it worth upgrading to like a 641? Will there be a big difference in performance for games.

Its a socket 775, is there a chance that a C2D CPU work with it?
 
yeah thats the one.
cool.

IT doesn't look like many people stock them anymore.
what about the celeron dual core like the Intel Celeron E1400 2.0Ghz Dual-Core Processor?
 
That Celeron is Core2 based and so wouldn't work, same with all the recent Pentium dual cores (E***). (Honestly, it's the worst naming scheme ever)

Look for a PentiumD, preferably the 9** series, would be better than any old Celeron!
 
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yeah thats the one.
cool.

IT doesn't look like many people stock them anymore.
what about the celeron dual core like the Intel Celeron E1400 2.0Ghz Dual-Core Processor?

The Celeron dual efforts are Core2's so they won't work.

It'll need to be one of the old stylee Pentium D 9XX series ones.
 
pentium IV 'presler' is the best you can get for LGA775 thats not core, there pretty good processors as well if your not speed obsessed, they'll do anything you want them to, but they do generate a fair bit heat i remember, not as bad as prescotts mind
 
pentium D 945 "presler"
3.4ghz stock speed- (17x200mhz)

is about the best chip that'll fit that board.
 
I got a prescott 660 3.6Ghz in a DS3 that I gave to one of my sons some time ago. Thats currently clocked at 4.3 but I have taken it to 4.7 with relative ease.

Only snag, is that its a HT CPU and so fake Dual core.

So, for single core, this I feel is about the king of the hill, but who the hell wants a furnace like that when the slowest C2D is going to thrash it.
 
If your going Pentium D then the 930's (Presler 65nm) are excellent clockers.

Had mine at 4Ghz for nearly 2 years on air and sold it on still with plenty of punch in it.

I do miss it actually. :(

Don't get a Pentium D ending with a 5. They are absolute carp and queue the processing even when there is one core doing sod all.
 
Better make it a Biostar, since its almost certain that system has an mATX case. The Geforce 7050V model should be reasonable, and it is no more expensive than an Asrock...
 
He is asking if a CPU will work in it rather than wanting a new Mobo.

Admittedly, it does seem to be a cheap and nasty Motherboard, but it also does look likely that it will take a low end C2D such as the E2180... I have had a peek at foxconns site baout it, and there was not anythign solid regarding the CPUs as such, but going by the number 800, that may very well point to 800FSB in which case that means that the low end Core2CPUs will indeed run in it and the 2180 is a great little CPU for the price and will quite simply stomp even the fastest P4 into the ground.

As a cheap upgrade, that will be a very good option... New Mobo might also require new ram and wont actually cure the problem of having a slow CPU and will force him to also upgrade that too!
 
He is asking if a CPU will work in it rather than wanting a new Mobo.

Admittedly, it does seem to be a cheap and nasty Motherboard, but it also does look likely that it will take a low end C2D such as the E2180... I have had a peek at foxconns site baout it, and there was not anythign solid regarding the CPUs as such, but going by the number 800, that may very well point to 800FSB in which case that means that the low end Core2CPUs will indeed run in it and the 2180 is a great little CPU for the price and will quite simply stomp even the fastest P4 into the ground.

As a cheap upgrade, that will be a very good option... New Mobo might also require new ram and wont actually cure the problem of having a slow CPU and will force him to also upgrade that too!

The VRM requirements are different for Core2Duo CPUs so that board just won't run anything based on the Core2 architecture, 800MHz or not.
 
Everything seems to be in order here! :)

If FatRakoon reckons the board will take a low end Core2 Duo (E2xxx series) then that sounds like a good place to start, ideally you would want to blag one from a friend for testing purposes (i.e try one before you buy one).

I have a gap in my INTEL history between Socket 478 Prescott and LGA775 Conroe so therefore no nadda about Old P4 on the LGA775 platform! :o

It may not just be an FSB thing getting the Allendale to work in the older motherboard, it may need a BIOS update or perhaps the VRM's/Motherboard can't provide the correct voltage etc

In short beg, borrow steal an INTEL E2xxx series CPU and test it in the system, if the chip is known good and working and doesn't work in the older mobo then I would seriously consider a mobo upgrade.
 
I dont know - the site says nothign about C2D in this board, Im only going by the 800number in the model, so its probable that WJA96 is spot on the money.

Lets look at things logically though...

2.66Celeron... Ok, almost any P4 is going to be a better option than that Celeron, especailyl for gaming... Hell even a 2Ghz will be a better CPU, but realistically, the age of the system is not helping.

If it takes a low end C2D, then thats briliiant, you get to keep the RAM and the Mobo, its job done and we can all go home and have a cup of tea and a biscuit, however, if it does not work ( Providing BIOS is fully up to date etc ) then the Board wont blow the CPU it will either work or it wont ( Dont quote me on that ) then he will know that he needs a new Mobo... Only so much can be asked from a cheap and nasty setup. and this will of course also mean RAM too!

But I feel that unless he can get hold of a Dual core P4 ( Providing it can utilise Dual core P4's ? - I am unsure if we have even established it can do that even? ) for next to nothing, then it will only be wasted money.

Perhaps its time to accept what he has, and forget abotu upgrading this at all, and just saving up the money to buy all 3 at the same time and then doing a swap with all 3 parts in one go!!!
 
All I'll say is - remember the P975 chipset fiasco. All those folks who bought P975 boards thinking they could run an E6600 in one, and it was nothing to do with the fact that they could or couln't run 1066MHz FSB. The VRM simply wasn't right for the new CPUs. It's like not all Core2Duo boards will run a Wolfdale or Yorkfield. Intel specifically change the hardware requirements to make us buy new stuff when we upgrade.

The 800 in that board's name refers to the Via P4M800 chipset it runs and the P4 name sort of gives it away a bit. The AGP slot and DDR RAM should also be sending out warning signs that this motherboard is unlikely to take a modern CPU. It's a motherboard so old it predates PCIe graphics:(

VIA do make a Core2 version of that chipset, but I think if Foxconn thought the board would take a Core2 CPU, they'd mention it.
 
The vanilla VIA P4M800 chipset does not support c2d processors, the VIA P4M800 Pro does. FSB support is irrelevant as WJA96 said earlier.
 
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