Which would offer better performance, 3.2ghz xeon's with hyperthreading, or 3/6ghz xeons without hyperthreading?

xoiio · Aug 23, 2014

Alright, something which I am working on figuring out, I am sure that the processors with hyperthreading are better but I am not 100% sure.

Basically, I have a blade server with two 3.2ghz xeon's, and the 3.2ghz ones are the only ones that offer hyperthreading unfortunately (which really sucks), however on ebay for a pretty good price I can get two 3.6ghz xeons, but these do not support hyperthreading or virtualization (which I don't use)

Basically, you get an extra 400mhz, however you lose two cores effectively, and while the extra speed would be good for one for one of the programs I am using (uses 50% of all cores or so), I can limit that do being on only two cores, increasing it's CPU usage to 80% but also having the remaining two cores free.

I am pretty sure the hyperthreading cores are the better ones, just want second opinions. Too bad the 3.6ghz ones don't have hyperthreading :/

xoiio · Aug 23, 2014

Hmm yknow I may have been looking at the wrong processors on the site, I have to double check but there are some 3.3ghz ones I didn't see before that have four cores, 8 threads, I don't think I have the e3 series but maybe they are compatible. If so that would be sweet.

Still not sure which processors I have, looking through the manual, but it supports up to 3.6ghz

edit: alright it's the Nocona line, can't tell if it supports newer (2011) xeons but I doubt it, so back to the original question.

edit2: alright I'm trying to figure out if the 3.6ghz Nocona supports hyperthreading or not, it's not listed at all on the site. Hmm

http://ark.intel.com/compare/27085,27087,27088,28016

Andrei_316 · Aug 24, 2014

It's obvious to go with the Xeon with Hyperthreading

would you get a G3258 OC to 3.6 or an i3 clocked at 3.3 ghz? I vote for the one with hyperthreading... It also is like an i5 vs an i7 (with hyperthreading)

k1114 · Aug 24, 2014

Pentium 4 era xeons? Those aren't worth a penny.

LookItsRain · Aug 24, 2014

These chips are 10 years old?

xoiio · Aug 24, 2014

LookItsRain :

Yes, but considering they are in a blade server it's not really anything to stick your nose up at, yes a newer one would be nice but I don't have the money to shell out for a new server, plus I'd use it for a gaming rig anyways.

Yes I could make a desktop that would perform better using modern parts but it lacks quite a few of the features a dedicated server has.

Pinhedd · Aug 24, 2014

xoiio :

Xeon is a brand name that Intel has used for a very, very long time.

The first 3.2 Ghz Xeon microprocessor that features Hyperthreading was released over a decade ago and is based on the Northwood microarchitecture used in the second generation Pentium 4 microprocessors. I have several rackmount servers with these exact microprocessors (4 CPUs each), I think I paid about $100 each a couple of years ago. They're neat collectables and are fun for playing around with, but don't expect to use them for production purposes.

There are several 3.6Ghz Xeon microprocessors that do not feature Hyperthreading. At least one of these is based off of the Prescott microarchitecture (third generation Pentium 4) that simply has Hyperthreading disabled. Most of the rest are newer microarchitectures that have Hyperthreading.

If you can provide some links to the sales that you found on Ebay I can advise you better. Furthermore, don't even think about using a Blade server unless you have a rack, enclosure, and power supply to go with it.

xoiio · Aug 24, 2014

Pinhedd :

No rack unfortunately, that's something I've wanted for a while but always too expensive, and the batteries in my UPS's need to be replaced so I'm just running the blade server standalone, so smaller is better.

I have this one upgraded fairly well, it's an hp proliant dl380 g4, both processors populated with the 3.2ghz Nocona xeons, both redundant 575w power supplies, though they are both on the same circuit right now, I'd like to run another extension cord from a different circuit so if the breaker goes it won't shut down.

Also have 6gb ram, planning on upgrading to 16gb at some point, found a nice price on an ebay listing, and it also gave me the info that with the later bios updates (which I may have, have to check) it will use all 16gb, not the 12gb limit it's listed at

The sale I found is for a newer generation xeon, I doubt it's socket compatible but maybe, I haven't worked with xeons beyond a couple servers and a workstation I have.

Link here anyways, just seems strange to me that the 3.2ghz xeon has hyperthreading while the 3.6 doesn't. Anyways it would be awesome if these worked but I have no clue what they are like in terms of backwards compatibility. They look the same on top but I can't see the pins.

http://www.ebay.ca/itm/151167065277?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

This is supposedly supported:
http://ark.intel.com/products/27202/Intel-Xeon-Processor-2_80-GHz-4M-Cache-800-MHz-FSB
Less speed, but dual core with hyperthreading, two of those would give it 8 cores, just not sure why that's not showing with the Nocona processors, it's hard to see what is compatible with this server, I can't find a list of every processor.

Pinhedd · Aug 24, 2014

xoiio :

Pinhedd :

No rack unfortunately, that's something I've wanted for a while but always too expensive, and the batteries in my UPS's need to be replaced so I'm just running the blade server standalone, so smaller is better.

I have this one upgraded fairly well, it's an hp proliant dl380 g4, both processors populated with the 3.2ghz Nocona xeons, both redundant 575w power supplies, though they are both on the same circuit right now, I'd like to run another extension cord from a different circuit so if the breaker goes it won't shut down.

Also have 6gb ram, planning on upgrading to 16gb at some point, found a nice price on an ebay listing, and it also gave me the info that with the later bios updates (which I may have, have to check) it will use all 16gb, not the 12gb limit it's listed at

The sale I found is for a newer generation xeon, I doubt it's socket compatible but maybe, I haven't worked with xeons beyond a couple servers and a workstation I have.

Link here anyways, just seems strange to me that the 3.2ghz xeon has hyperthreading while the 3.6 doesn't. Anyways it would be awesome if these worked but I have no clue what they are like in terms of backwards compatibility. They look the same on top but I can't see the pins.

http://www.ebay.ca/itm/151167065277?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

This is supposedly supported:
http://ark.intel.com/products/27202/Intel-Xeon-Processor-2_80-GHz-4M-Cache-800-MHz-FSB
Less speed, but dual core with hyperthreading, two of those would give it 8 cores, just not sure why that's not showing with the Nocona processors, it's hard to see what is compatible with this server, I can't find a list of every processor.

Those 3.6Ghz microprocessors are these. They do support Hyperthreading but they're still old microprocessors, based on the 64 bit Prescott microarchitecture.

As a side note, don't get too caught up on Hyperthreading. Hyperthreading doubles the number of logical processors but it doesn't do squat for the actual execution resources. It allows the execution resources to be used more efficiently but Intel's older implementation of Hyperthreading was far less advantageous than the newer implementations.

xoiio · Aug 24, 2014

Pinhedd :

xoiio :

Pinhedd :

No rack unfortunately, that's something I've wanted for a while but always too expensive, and the batteries in my UPS's need to be replaced so I'm just running the blade server standalone, so smaller is better.

I have this one upgraded fairly well, it's an hp proliant dl380 g4, both processors populated with the 3.2ghz Nocona xeons, both redundant 575w power supplies, though they are both on the same circuit right now, I'd like to run another extension cord from a different circuit so if the breaker goes it won't shut down.

Also have 6gb ram, planning on upgrading to 16gb at some point, found a nice price on an ebay listing, and it also gave me the info that with the later bios updates (which I may have, have to check) it will use all 16gb, not the 12gb limit it's listed at

The sale I found is for a newer generation xeon, I doubt it's socket compatible but maybe, I haven't worked with xeons beyond a couple servers and a workstation I have.

Link here anyways, just seems strange to me that the 3.2ghz xeon has hyperthreading while the 3.6 doesn't. Anyways it would be awesome if these worked but I have no clue what they are like in terms of backwards compatibility. They look the same on top but I can't see the pins.

http://www.ebay.ca/itm/151167065277?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

This is supposedly supported:
http://ark.intel.com/products/27202/Intel-Xeon-Processor-2_80-GHz-4M-Cache-800-MHz-FSB
Less speed, but dual core with hyperthreading, two of those would give it 8 cores, just not sure why that's not showing with the Nocona processors, it's hard to see what is compatible with this server, I can't find a list of every processor.

Those 3.6Ghz microprocessors are these. They do support Hyperthreading but they're still old microprocessors, based on the 64 bit Prescott microarchitecture.

As a side note, don't get too caught up on Hyperthreading. Hyperthreading doubles the number of logical processors but it doesn't do squat for the actual execution resources. It allows the execution resources to be used more efficiently but Intel's older implementation of Hyperthreading was far less advantageous than the newer implementations.

Do you think those would work as replacements for the Nocona ones I have? Like I said not really sure if the socket changes between generations of xeons, or if those would work at all.

Pinhedd · Aug 24, 2014

xoiio :

Pinhedd :

xoiio :

Those 3.6Ghz microprocessors are these. They do support Hyperthreading but they're still old microprocessors, based on the 64 bit Prescott microarchitecture.

As a side note, don't get too caught up on Hyperthreading. Hyperthreading doubles the number of logical processors but it doesn't do squat for the actual execution resources. It allows the execution resources to be used more efficiently but Intel's older implementation of Hyperthreading was far less advantageous than the newer implementations.

Do you think those would work as replacements for the Nocona ones I have? Like I said not really sure if the socket changes between generations of xeons, or if those would work at all.

Yes it would. Irwindale is a minor update to Nocona. They are socket compatible but the motherboard may need a firmware update.

xoiio · Aug 24, 2014

Alright great, they are cheap enough if it doesn't work it's not a huge loss, still a big sucky if I did lose the money but it should work, I'll have to get them whenever I get some cash, which should hopefully be later today froma bit of pc repair work.

Pinhedd · Aug 24, 2014

good luck!

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