Taming of Prescot flamethrowers.

[jurgen36]

This might be helpful to some persons.
I recently build a new system for my daughter. As she wanted the most modern rig I selected the following setup.

MBO: Intel D875PBZ
CPU: P4 3.6HT E 800 fsb (Prescot)
Mem: 2 x 512 Meg Kingston PC4500
Drives: 2 x Maxtor 260 Gbyte Sata Raid
2 x Maxtor 260 Gbyte IDE
2 x Pioneer 8 speed DVD writers
PSU: 400 watts brand name
Case: Large tower with 4 fans, 2 x inlet on the side 1 x outlet on top, 1 x outlet on back panel.
Video: 256 Meg card.

Anyway all went well originally. But as soon as I applied 100% cpu load the bord temp went up to 49C the Cpu went to 70C and the drives were to hot to touch. Also the 400 watt supply started to drop the 12 volt line to less then 10.5 volts. Room temp was 36C.

Well obviously this was not reliable.

I changed the PSU to a Super Flower SF-500TS supply. This is rated as 500 watts continus or 560 watts peak. It has 4 large temp controlled fans. I tested it for 24 hours with a static load of 520 watts. No problems. It also has 12 IDE power connectors and 2 SATA connectors. After fitting it the MOBO temp went down to 44C. The CPU went to 64C. Probably dropped by the four large CPU fans. Still to hot. I then fitted a speed controlled Turbofan to the CPU, it comes with a massive copper heat sink and looks like a Jet engine. Temp now CPU 59-61C bord 42C. The drives still were to hot. I then fitted two drive coolers 2 fans each bolted to the SATA drives and two drive coolers to the IDE drives. The Ide coolers fit in two spare CD rom slots, they have two small fans each and an air filter. Result now as follows.
CPU 58-59C, MOBO 42C, drives 37C. This is with 100% cpu load and 36C room temp. On idle MOBO 37C CPU 45C. Well this is acceptable and well within spec's.
Maybe this can help somebody with the Prescot Wafle irons.
Regards


Jurgen

 

[Crowley16]

holy crud...

that's one beefy system, so just how many fans have you got in there now? Maybe you should include a set of protective headsets

maybe you should try water cooling, not that much work considering all the mods you had to do...

I wish I could afford to build a monster like that, well, maybe someday...

Procrastinate Now!

 

[BadBigBen]

Hola, Jurgen,

yes, life in Thailand has it's adverse effects as to cooling systems... have you everthought of moding a Refrigerator or Airconditioning Unit and build a PC into that... or you could build an outdoor grill with the system and have the benefit of surfing aswell...

(don't take to serious)

I'm glad that temps here in Europe are a bit cooler than where you life, but thank you for the information nevertheless... it's always good to know what one can do...

Ben


If it works don't fix it! If it doesn't use a sledgehammer...

 

[jurgen36]

I did go to BKK to have a look at the water cooling systems but they are to cumbersome. I am also afraid of a loose fitting or bad connection on the hoses. One interresting alternative I tried was Peltier effect cooling, this really worked, I could cool the CPU to -14C but here in Thailand we have to much humidity and the condensation would play havoc with the electronic's. In regards to fans. There are 5 fans on the case, 8 fans to cool the drives, 4 large fans on the PSU, and the turbine (not a fan) on the CPU. All fans are termostatic controlled. The only time they become noisy when I run the SETI program, but then of course the cpu use is 100%. With normal use they are very quite. Ok we have extreme climatic conditions here, but with enough trial and error you can get the Prescot room heaters down to usable temperatures. Regards

PS: I would not recommend the Prescot chips for any normal Computer, the problems starts with the power supply. Most supplies simply can not deliver the high currents needed for reliable operation. In my case with the P4 3.6E 119 watts at 1.36 volts this makes the current about 87 amperes.

Jurgen

 

[DragonQ0105]

With a system like that (no doubt expensive)I'd advise a Water Cooling System (it seems you don't really mind spending money because this system is probably about twice as expensive as a near-top-of-the-range Athlon 3200+ System or a P4 3.2GHz System).

That'll probably work a treat.

 

[jurgen36]

DragonQ0105
No not really. I live in Thailand and computer parts prices are very cheap compared to western countries. If you come here as a tourist you probably pay 70% of western prices, if you live here you might only pay about 30 to 40% of prices in the US or EU. So this gives the opportunity to experiment. No, water cooling is definately out. Remember this system is for my daughter and she would not know how to maintain it. A complete watercooling system here is about $US 40, this is complete with all fittings etc. It is actually cheaper as the turbo system I am using. I had the system running for a burn in test at a 5% overclocking rate. It run ok for 12 hours at 3.8 Ghz. The temperature sensors stayed within the spec's. So at normal clock rates she will have no problems at all.
Regards

Jurgen

 

[rotaman]

Is Pantip Plaza still THE place to get PC hardware in Bkk? that's where i used to go a couple years back..

You've got a great system there, although it's got to be making some noise with all tose fans!! Water cooling would be the cherry on the cake for a system like this