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#1
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Anyone using Dual Core Dual CPU boards?
Leythos wrote:
I would like to setup a small production server for our database and files, have already been quoted a Dual Xeon 3.2Ghz machine, but would like to consider the Dual Core Dual CPU machines - as the Dual Core seems to be noticeably faster in single CPU testing in our shop (than a Hyper-Threaded system). Anyone got actual real world experience with Dual Core Dual CPU systems? Not with Dual DC Xeons, but some guys I know (worked with a couple of jobs back) put together a dual DC Opteron server (Dual 270s, IIRC.) It's very fast - doesn't perform quite as well as the quad-Opteron boxes they have, which makes sense given that it's got half the local memory bandwidth per core - but it's a heck of a lot cheaper than a 4P system. I haven't talked to them recently enough to find out if they managed to get some DC 800-series chips yet; I think the plan had been to put those in some of their 4P boxes. -- Nate Edel http://www.cubiclehermit.com/ "What's the use of yearning for Elysian Fields when you know you can't get 'em, and would only let 'em out on building leases if you had 'em?" (WSG) |
#3
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Anyone using Dual Core Dual CPU boards?
* Leythos:
I've used Intel CPU's since the early 80's if I remember correctly, and I've tried every Intel clone CPU that's hit the market from every vendor. In most cases the clone CPU's worked fine or even performed some functions quicker. Where the problem has always been, for me, was in the motherboards/chipsets used with those clone chips. Right, the 3rd party chipsets often were crap (especially the ones from VIA and SiS). However, the Nvidia nForce4 is very good, and the nForce4 Professional (which is for workstations and servers) is very good, too. Nothing that can be compared with something from companies like VIA... I've never had a failed Intel implementation, worked on every server, lasted for many decades, so I'll stick with what I consider as rock stable, even if it means I'm not on the bleeding edge of technology. Well, we have Dual DC XEONs at work, and also have Dual DC Opterons. Of course no homebrew machines but reliable hardware from HP. The Opterons are solid like a rock as are the intels, but the intels are much slower (the stupid shared FSB can be a _real_ bottleneck!), and they get really really hot (even when the current DC Opterons also produce a nice bunch of heat). It's really obvious that the Dual Core XEONs are really just interim products with the main purpose to tell the world "we can do that, too" and to prevent the XEON from falling too much behind the cheaper consumer processor Pentium4 (which has DC fr some time now)... Honestly, if its not your home computer but a production machine for a company that has to rely on it then the vendor becomes much more important than what's inside. If something goes wrong neither intel nor AMD will help you, it's the vendor you got your hardware from. Service and support are points you should care more than for the choice between of intel or AMD. Technically, the Opteron platform with nForce4 Professional is at least as good as intels XEON and intels chipsets (i.e. E7525) if not better. intel indeed generally is very reliable, and so is AMD (and Nvidia). There are AMD systems which are unreliable and there are intel systems which are unreliable, too. No matter what you choose, you always end up with the quality level the vendor you're buying from delivers... Benjamin, with intel at home |
#4
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Anyone using Dual Core Dual CPU boards?
* Leythos:
Thanks for all of the above. I was fully aware of everything you wrote and understood it before I posteded. I don't disagree about the Vendor part, but I don't put as much weight on it as you do. We've got hundreds of server, some branded, some unbranded, and they all have the same level of reliability, it's more about the parts than the vendor, if you pick quality parts then the vendor doesn't factor into it. It doesn't necessarily factor into reliability, but it definitely tactors into serviceability... I'm still trying to get info from real people using Dual Core Dual CPU boards and their experience (Intel CPU's that is). Maybe you should specify what exactly you want to know. As to reliability, our DC XEONs are rock solid... Benjamin |
#5
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Anyone using Dual Core Dual CPU boards?
Leythos wrote:
In article , says... Leythos wrote: I would like to setup a small production server for our database and files, have already been quoted a Dual Xeon 3.2Ghz machine, but would like to consider the Dual Core Dual CPU machines - as the Dual Core seems to be noticeably faster in single CPU testing in our shop (than a Hyper-Threaded system). Anyone got actual real world experience with Dual Core Dual CPU systems? Not with Dual DC Xeons, but some guys I know (worked with a couple of jobs back) put together a dual DC Opteron server (Dual 270s, IIRC.) It's very fast - doesn't perform quite as well as the quad-Opteron boxes they have, which makes sense given that it's got half the local memory bandwidth per core - but it's a heck of a lot cheaper than a 4P system. Thanks, but I'm looking for Intel as this is for my Production server and don't want to take what "I" consider as chances. My assumption is that the same would basically apply: 2x dual core xeons would run fast, just not as fast as 4 separate Xeon MPs (although because of the shared FSB on Xeons - unless they've finally done that in - the difference should be less than AMD.) -- Nate Edel http://www.cubiclehermit.com/ "What's the use of yearning for Elysian Fields when you know you can't get 'em, and would only let 'em out on building leases if you had 'em?" (WSG) |
#6
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Anyone using Dual Core Dual CPU boards?
Benjamin Gawert wrote:
* Leythos: I've used Intel CPU's since the early 80's if I remember correctly, and I've tried every Intel clone CPU that's hit the market from every vendor. In most cases the clone CPU's worked fine or even performed some functions quicker. Where the problem has always been, for me, was in the motherboards/chipsets used with those clone chips. Right, the 3rd party chipsets often were crap (especially the ones from VIA and SiS). However, the Nvidia nForce4 is very good, and the nForce4 Professional (which is for workstations and servers) is very good, too. Nothing that can be compared with something from companies like VIA... Some of the latest Via stuff is very good as well, and some of the older Nvidia stuff was pretty weak; the present generation of both companies is better, but I will take the KT800 over any of the nForce 3 chipsets. -- Nate Edel http://www.cubiclehermit.com/ "What's the use of yearning for Elysian Fields when you know you can't get 'em, and would only let 'em out on building leases if you had 'em?" (WSG) |
#7
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Anyone using Dual Core Dual CPU boards?
Leythos wrote:
In article , says... * Leythos: Thanks for all of the above. I was fully aware of everything you wrote and understood it before I posteded. I don't disagree about the Vendor part, but I don't put as much weight on it as you do. We've got hundreds of server, some branded, some unbranded, and they all have the same level of reliability, it's more about the parts than the vendor, if you pick quality parts then the vendor doesn't factor into it. It doesn't necessarily factor into reliability, but it definitely tactors into serviceability... I'm still trying to get info from real people using Dual Core Dual CPU boards and their experience (Intel CPU's that is). Maybe you should specify what exactly you want to know. As to reliability, our DC XEONs are rock solid... I thought I was specific, I want to know about real experiences from actual users/owners with Dual Core Dual CPU boards (intel CPU) - I'm looking for a Dual CPU Dual Core board (and notice I posted in the Intel group) for a new server, but I want to know what issues/things people like about the board they are using so that I can review them also. So go to newegg.com and bring up CPUs, the 9[34], the 955, whatever M/B you like (I like ASUS) and ignore the price info, read the user reviews. What I gathered is that if you get the stock heatsink on right it works even overclocked, and if you get it wrong the chip will run way hot. My personal conclusion is that the heatsink attachment is hard to use, those who lack the touch will have problems. See my other post on hyperthreading, if you need a lot of CPU power you will want to decide if HT is useful for you. -- bill davidsen SBC/Prodigy Yorktown Heights NY data center http://newsgroups.news.prodigy.com |
#8
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Anyone using Dual Core Dual CPU boards?
Bill Davidsen wrote:
What I gathered is that if you get the stock heatsink on right it works even overclocked, and if you get it wrong the chip will run way hot. My personal conclusion is that the heatsink attachment is hard to use, those who lack the touch will have problems. Dunno about running hot - I was a bit ham-handed in getting the heatsink on my new 940-based system, and it's running cool enough. But yeah, the HS mounting system on those chips (all 775 socket chips? This is the first non-AMD system I've assembled in years.) -- Nate Edel http://www.cubiclehermit.com/ "What's the use of yearning for Elysian Fields when you know you can't get 'em, and would only let 'em out on building leases if you had 'em?" (WSG) |
#9
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Anyone using Dual Core Dual CPU boards?
Nate Edel wrote:
Bill Davidsen wrote: What I gathered is that if you get the stock heatsink on right it works even overclocked, and if you get it wrong the chip will run way hot. My personal conclusion is that the heatsink attachment is hard to use, those who lack the touch will have problems. Dunno about running hot - I was a bit ham-handed in getting the heatsink on my new 940-based system, and it's running cool enough. But yeah, the HS mounting system on those chips (all 775 socket chips? This is the first non-AMD system I've assembled in years.) I suspect that even "ham handed" from an experienced person is adequate. It just wants to hear about 30 seconds of sincere swearing. When possible I put the CPU and heatink on before installing the board. With a server size board that's not always possible. -- bill davidsen SBC/Prodigy Yorktown Heights NY data center http://newsgroups.news.prodigy.com |
#10
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Anyone using Dual Core Dual CPU boards?
Leythos wrote:
In article , says... Leythos wrote: In article , says... * Leythos: Thanks for all of the above. I was fully aware of everything you wrote and understood it before I posteded. I don't disagree about the Vendor part, but I don't put as much weight on it as you do. We've got hundreds of server, some branded, some unbranded, and they all have the same level of reliability, it's more about the parts than the vendor, if you pick quality parts then the vendor doesn't factor into it. It doesn't necessarily factor into reliability, but it definitely tactors into serviceability... I'm still trying to get info from real people using Dual Core Dual CPU boards and their experience (Intel CPU's that is). Maybe you should specify what exactly you want to know. As to reliability, our DC XEONs are rock solid... I thought I was specific, I want to know about real experiences from actual users/owners with Dual Core Dual CPU boards (intel CPU) - I'm looking for a Dual CPU Dual Core board (and notice I posted in the Intel group) for a new server, but I want to know what issues/things people like about the board they are using so that I can review them also. So go to newegg.com and bring up CPUs, the 9[34], the 955, whatever M/B you like (I like ASUS) and ignore the price info, read the user reviews. What I gathered is that if you get the stock heatsink on right it works even overclocked, and if you get it wrong the chip will run way hot. My personal conclusion is that the heatsink attachment is hard to use, those who lack the touch will have problems. See my other post on hyperthreading, if you need a lot of CPU power you will want to decide if HT is useful for you. HT is nice, but it's got a place and it's not beneficial in every case. As an example, in one of our Dual Xeon SQL servers we see no performance difference with HT on or off. Same for our Quad CPU servers and MS SQL. In other systems, like you described, HT makes a difference, even in my P4/3.2ghz/HT laptop I notice a difference, but not as much as I see on the Dual Core systems. There was a discussion either here or the linux kernel mailing list about a year ago, most people found their CPU ran cooler with HT on. I have not made the effort to measure this myself, I don't have a heat problem. -- bill davidsen SBC/Prodigy Yorktown Heights NY data center http://newsgroups.news.prodigy.com |
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