LGA 775 upgrades

[EverythingIBM]

I have a good handful of computers using LGA 775 on pentium 4 processors, what would be the fastest processor compatible with P4 computers if I wanted to replace them?

I was thinking Xeon, but from what I've heard, those can roast a pig.

P4 itself is pretty hot if not cooled properly.

[ch_123]

Depends on the chipset on the motherboard.

Incidentally, Xeons and Opterons (at least the ones for single socket systems like LGA775) are usually equivalent to whatever consumer CPU is around except they are far more expensive. Ostentatiously, they are higher quality ones which are supposed to be more reliable, in reality, it's a bit of a money making scam.

That said, anyone remember the Opteron 146 and 165? Hehe, those were the days.

[keyb_gr]

Yep, that's a chipset/board dependent thing. For example, i955 based boards cannot take anything newer than a P4 or Pentium D (i.e. either decent space heater or magnificient space heater). From what I heard the core and northbridge supply were coupled so that the lower voltages required for newer Core-based designs could not be supported. i975X is required for that, with a sufficiently new BIOS.

A bit of a pity really, especially if you have an otherwise nice machine like a Dell Precision 380 (this one replaced a dead AMD machine with a craptacular consumer case which had always been a pain to work on; such a professional screw-less design is pure joy in comparison).

[Xuan]

That said, anyone remember the Opteron 146 and 165? Hehe, those were the days.

He, I'm still using an Opteron 165.

[EverythingIBM]

Yep, that's a chipset/board dependent thing. For example, i955 based boards cannot take anything newer than a P4 or Pentium D (i.e. either decent space heater or magnificient space heater). From what I heard the core and northbridge supply were coupled so that the lower voltages required for newer Core-based designs could not be supported. i975X is required for that, with a sufficiently new BIOS.

A bit of a pity really, especially if you have an otherwise nice machine like a Dell Precision 380 (this one replaced a dead AMD machine with a craptacular consumer case which had always been a pain to work on; such a professional screw-less design is pure joy in comparison).

So the first thing is to see what chipsets I have, then what the corresponding BIOS can support. I should try lavalys everest for that end (I used it once but didn't find it terribly helpful).

And yeah, I love screwless workstations. Especially if the MOBO is on the left side (mostly BTX I guess, but some modded their ATX on the left); I always have my computer on the left for some reason... feels odd if I put it on the right side.

I presume you could use a presler with a computer running with a prescott, wouldn't a presler be faster and run less hot being 65 nm?

[Voixdelion]

I think I saw a site once that had compiled a pretty hefty database of cross referencing chips to boards, searchable by either field and returning a list of compatibles.  I'll see if I can find it again...

At the very least though. I would think the board manufacturer should have a list of which chips can be supported - I know that ASUS lists compatible processors and which BIOS rev. is needed for each board in the support area.

[ch_123]

I presume you could use a presler with a computer running with a prescott, wouldn't a presler be faster and run less hot being 65 nm?

Depends on what software you use. If you run a lot of stuff that benefits from multiple cores, then it's good, if you don't, there will be either no difference or a regression depending on how fast your Pentium 4 is.

[EverythingIBM]

Depends on what software you use. If you run a lot of stuff that benefits from multiple cores, then it's good, if you don't, there will be either no difference or a regression depending on how fast your Pentium 4 is.

FL Studio would benefit from multiple cores; that's one thing which would improve. Probably some games too.

The chipset I have is i925X.

[keyb_gr]

In any case, the sucker will run hot. Power consumption can only be expected to decrease under very specific conditions, with any of the older 1.4 V Pentium Ds it would rather go up. I wouldn't bother with these old frying pans any more. Better slap in enough memory and the fastest storage subsystem that seems feasible.

[EverythingIBM]

In any case, the sucker will run hot. Power consumption can only be expected to decrease under very specific conditions, with any of the older 1.4 V Pentium Ds it would rather go up. I wouldn't bother with these old frying pans any more. Better slap in enough memory and the fastest storage subsystem that seems feasible.

Considering I'm already running a prescott at 90nm, I'm sure a 65nm presler couldn't be any worse. I'm not even sure if a presler would be compatible with my computers anyhow.

[ch_123]

The increase in heat efficiency in going from 90nm to 65nm doesn't really cancel out the fact that you're putting twice as much CPU into the same space.

What speed of Prescott do you have?

[EverythingIBM]

The increase in heat efficiency in going from 90nm to 65nm doesn't really cancel out the fact that you're putting twice as much CPU into the same space.

What speed of Prescott do you have?

My intellistation has a Prescott 551, at 3.4 Ghz with HT, and obviously EM64T. The highest it gets is 53 Celsius.

My ThinkCentre has one running at 3.2 Ghz also with HT.

[ch_123]

IIRC, the faster Pentium Ds had a much higher TDP than the equivalent Pentium 4s. If you got a Pentium D, you'd want to get a good third party cooler with it.

You could always try and find a BTX motherboard that supports C2Ds, assuming of course that BTX is what that computer is using.

[EverythingIBM]

IIRC, the faster Pentium Ds had a much higher TDP than the equivalent Pentium 4s. If you got a Pentium D, you'd want to get a good third party cooler with it.

You could always try and find a BTX motherboard that supports C2Ds, assuming of course that BTX is what that computer is using.

The ThinkCentre isn't BTX, it's a custom motherboard & case design. The intellistation does use a BTX mobo; I could always shove a core2duo in there and see if it works; highly doubt it though. And I don't want to wreck the computer.
The problem with getting another motherboard resides in the fact that I want to be able to use SCSI and the ECC RAM.

There were some core2duo intellistations, but they sold like hot cakes.

[kishy]

Define selling like hotcakes...

Large corporations ordering thousands for their offices != selling like hotcakes.

Thousands of individuals buying for home use...that's more like it.

Figure out the models and ebay search for appropriate mobos. May find a good deal.

[EverythingIBM]

Define selling like hotcakes...

Large corporations ordering thousands for their offices != selling like hotcakes.

Thousands of individuals buying for home use...that's more like it.

Figure out the models and ebay search for appropriate mobos. May find a good deal.

There are what I like to call "IBM hunters" you know. However yes, businesses like to snatch up the majority of IBM products. I think some business took all of the intellistations because one day there were just gone. And there were far too many for any single home user to buy all of them.

There are no core2duo motherboards that support PC2-3200E and SCSI daughter cards. I'm content with this motherboard, I just wanted to know if I could upgrade the processor in the future to keep it up with the times.

[ch_123]

Any motherboard that can support ECC DDR2 will support DDR2-400. SCSI daughter cards? Get an old dedicated controller. The motherboard has PCI-X slots in addition to PCI-E right?

Define selling like hotcakes...

Sold so well that IBM stopped making them... hmm....

[ricercar]

will ANY 775 cpu work appropriately in any 755 motherboard? Say a Celeron 3GHz to a new iWhatever?

will ANY socket P cpu work appropriately in any socket P laptop? Say an 800 MHz bus T7250 to a 45nm 1066 MHz P9600

I've got each of these and wonder sometimes about replacing the CPUs.

[ch_123]

No and no. And Core ix chips don't use LGA775.

[EverythingIBM]

No and no. And Core ix chips don't use LGA775.

The new i7 chips moved the northbridge or whatever into the CPU. More pins now.

The old core2duo used LGA 775, but later models changed.

[ch_123]

Core 2 Duo used LGA775 throughout it's life, but chipset limitations limit the upgradability of various LGA775 motherboards.

In fact, Intel is going to be changing the socket again for it's new chips coming out this year.

[EverythingIBM]

Core 2 Duo used LGA775 throughout it's life, but chipset limitations limit the upgradability of various LGA775 motherboards.

In fact, Intel is going to be changing the socket again for it's new chips coming out this year.

You mean ITS life, "it's" stands for "it is", whereas "its" is possessive. Someone else can take some grammar class =)
So this is what you essentially said:

Core 2 Duo used LGA775 throughout it is life

No, there are some non LGA775 core2duos.

I like the pentium 1 sockets the best, I think having the pins on the processor is better than on the motherboard; who cares if the processor is expensive, it's more environmentally friendly, and motherboards should be able to last a long time anyways.

[ch_123]

No, there are some non LGA775 core2duos.

Aside from the laptop ones?

[EverythingIBM]

Okay I did some checking, apparently most P4 motherboards only support P4 or P4 "Extreme edition". And Celeron D (I hate celeron).

So, I doubt I could stuff a Pentium D in any of my P4 computers. Guess I will either have to get celeron or a 3.8 Ghz P4 EE. I'm skeptical as to whether there is really any difference from 3.4 to 3.8 Ghz.

[Phaedrus2129]

CPU support depends on the chipset. Intel 8 series chipsets, for instance, support only Pentium 4 and Celeron processors. Find out your chipset using a program like CPU-Z, then google it to find Intel's page on it, which should list CPU support.

And even then the motherboard's BIOS might not support an upgraded processor, especially if it's an OEM motherboard.

I'd say overclock, except P4s overclock like crap, especially the later HT ones. And the 3.8GHz ones are rare and cost a fortune.

[Hak Foo]

And even then the motherboard's BIOS might not support an upgraded processor, especially if it's an OEM motherboard.

I'd say overclock, except P4s overclock like crap, especially the later HT ones. And the 3.8GHz ones are rare and cost a fortune.

A lot of it is board also.  ASRock makes an 865-chipset board which supports Core 2: http://www.asrock.com/mb/overview.asp?Model=ConRoe865PE

OTOH, I have a Sony PC I bought for $20 which features a Pentium D-920 in a i945 board, and no sign of Core 2 support, since it's an Intel board and they're a mess to keep alive.  Intel stuff is very weak for CPUs.

I love ASRock's tendency to do cool chipset stuff.  I had a 939SLI32 for a long time.

[kriminal]

No and no. And Core ix chips don't use LGA775.

core iX chips use LGA 1366 or 1156, and in most cases LGA775 chips will work on
LGA775 boards {in most cases} depends on the board really...

[EverythingIBM]

CPU support depends on the chipset. Intel 8 series chipsets, for instance, support only Pentium 4 and Celeron processors. Find out your chipset using a program like CPU-Z, then google it to find Intel's page on it, which should list CPU support.

And even then the motherboard's BIOS might not support an upgraded processor, especially if it's an OEM motherboard.

I'd say overclock, except P4s overclock like crap, especially the later HT ones. And the 3.8GHz ones are rare and cost a fortune.

Nah, 3.8 ones aren't rare, there's lots on ebay. I think uncommon is more appropriate. 3.4 ones are less common as well, most P4s were in the 2.6 or 3.0 range.

EDIT: I already stated the chipset, I don't believe it supports pentium D. Intel kindly scrambled the page for that chipset.

[Phaedrus2129]

Core i3 500, Core i5 600, Core i5 700, Core i7 800: LGA1156

Core i7 900: LGA1366

Hope that clears the confusion...