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What is the difference between the Q6700 and QX6700 quad core processors?
They seem to have very similar specs, but QX6700 gets a very big price premium. -- Will |
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troop wrote:
In article , am says... What is the difference between the Q6700 and QX6700 quad core processors? They seem to have very similar specs, but QX6700 gets a very big price premium. upward unlocked multiplier is one difference--the Q multiplier can be reduced only. Have any of the Core2 line been release with HT enabled? The hardware seems to be present but disabled, like turning it off in the BIOS. -- Bill Davidsen He was a full-time professional cat, not some moonlighting ferret or weasel. He knew about these things. |
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Bill Davidsen wrote:
troop wrote: In article , am says... What is the difference between the Q6700 and QX6700 quad core processors? They seem to have very similar specs, but QX6700 gets a very big price premium. upward unlocked multiplier is one difference--the Q multiplier can be reduced only. Have any of the Core2 line been release with HT enabled? The hardware seems to be present but disabled, like turning it off in the BIOS. That doesn't match anything I've read - what's your basis for thinking Core 2 has HT (/SMT) in hardware but disabled? -- 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) |
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"troop" wrote in message
m... In article , am says... What is the difference between the Q6700 and QX6700 quad core processors? They seem to have very similar specs, but QX6700 gets a very big price premium. upward unlocked multiplier is one difference--the Q multiplier can be reduced only. So if I am using this in - for example - a Dell Precision 390, which does not overclock, it makes sense to get the Q6700 and not waste money on QX6700 because that would be best used on boards that overclock? -- Will |
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Will wrote:
"troop" wrote in message What is the difference between the Q6700 and QX6700 quad core processors? They seem to have very similar specs, but QX6700 gets a very big price premium. upward unlocked multiplier is one difference--the Q multiplier can be reduced only. So if I am using this in - for example - a Dell Precision 390, which does not overclock, it makes sense to get the Q6700 and not waste money on QX6700 because that would be best used on boards that overclock? Yes. In fact, my impression is that newer revs of the Q6700 will run a bit cooler than the QX6700. -- 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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Nate Edel wrote:
Bill Davidsen wrote: troop wrote: In article , am says... What is the difference between the Q6700 and QX6700 quad core processors? They seem to have very similar specs, but QX6700 gets a very big price premium. upward unlocked multiplier is one difference--the Q multiplier can be reduced only. Have any of the Core2 line been release with HT enabled? The hardware seems to be present but disabled, like turning it off in the BIOS. That doesn't match anything I've read - what's your basis for thinking Core 2 has HT (/SMT) in hardware but disabled? Two suggestions, the HT bit is set, and the number of siblings is two. On single-core it was one, and on SPARC multi-thread CPUs it is reported as four. Clearly what's in the registers could be misleading, there was another thing to check in the old PentiumD top of the line (950?) with HT enabled. There's another bit set in the flags, but I can't find the discussion I was reading, and there was a comment about "future processors" when the Core2 came out, which makes me think Intel was still looking at SMT. And for some things sharing the L1 cache will really help. -- Bill Davidsen He was a full-time professional cat, not some moonlighting ferret or weasel. He knew about these things. |
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