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Unread 11-22-2005, 08:41 AM   #207
Marci
Cooling Savant
 
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Join Date: May 2003
Location: Wakefield, West Yorkshire, UK
Posts: 486
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Quote:
-> so if you use an AMD CPU, how do 'we' know its TIM joint was/is ok ? (how do we measure 'ok' ?)
Good question hereby exemplified - we get frequent cases of NEW as well as 2nd hand / subjected-to-frequent-mount-and-dismount CPUs exhibiting ridiculously high temps on a setup that with the same model CPU formerly produced much better results. Repeat mountings showed no evidence of solution. Removed IHS, and resulting temps beat the hell out of the previous CPU with IHS that exhibited peachy temps.

ie: (worded better) Storm G4, D5, HE120.1 and some unsuitable fan. All variables constant (ambient, liq temp, flowrate, pressure, airflow etc)

[3200+ sample A] under load at 38 deg C. [3200+ sample B] under load at 49 deg C. Cooling system not changed. CPU is only change. Repeated mounting to elliminate. Only point that we have no control over is the IHS > Die joint. Remove IHS from [sample B] and temps become sound. Better than [sample A]. Remove IHS from [Sample A] and temps match [Sample B]. The only establishable flaw - IHS. Becoming more and more frequent round here, and we only handle AMD CPUs. Very rarely ever have an Intel CPU coming thru our doors. Lucky if more than 5 a year vs a massive quantity of AMD in comparison.



Thus I tend to assume watercooling market is predominantly AMD based. Or enough so over Intel users to warrant testing being done in preference on AMD based simulation rather than Intel.

Don't have experience of Intel IHS flaw rate to compare. Did you gain any info on sales levels whilst at Swiftech Bill, Intel blocks vs AMD blocks?? Universality of Storm rules it's sales levels out form being useful, but 6000 series would be... Is my assumption based on our sales reflected elsewhere by anyone else (block manufacturer would be handy here - DD, Swiftech)? It's at the point where we literally don't consider Intel at all in any of our equations... technical, sales, purchasing or otherwise. This is over 9yrs of sales at highstreet component level, highstreet off-the-shelf PC level, and online via enthusiast aimed online store.

Quote:
perhaps better to present bare die and IHS data separatly
Indeed - if no solution can be decided upon, simply (?) do both. Satisfies all arguments - before folks fall out past point of restore, which no-one wants. *passes round the chocolate biscuits*

However, those results only self-comparable unless all have access to same TTV and same Diesim - or correlative formulae provided to calc. Back to the same old worms... new can.
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