2048Megabytes

Is this a good definition of Hyperthreading written below?

Intel's HyperThreading Technology allows a single processor to effectively create two logical processors to an operating system. A single processor can execute multiple instructions on the same clock cycle increasing CPU performance. This simulates multiprocessing performance with a single processor. Performance will vary depending on the specific hardware and software you use.

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Vizy93

Don't AMDs have it too?

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Emperor_nero

No Hyper-Theading is a trademarked name for a technology Intel developed.

http://en.wikipedia.org/wiki/Hyper-threading

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Vizy93

Oh, my bad. Then whats HTT for AMDs? does it stand for something else?

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mep916

HyperTransport Technology.

http://www.google.com/search?hl=en&s...gy&btnG=Search

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Vizy93

Lol, thnx for clearing that up!

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ellanky

but they are the same thing right?

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mep916

No, read these...

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hackapelite

That part is incorrect... HT doesn't make multiple instructions execute simultaneously on the same clock cycle. It works more like this: there are two logical threads (#1 and #2) both use the same execution core, and both can (and do) have stuff running on them...now, when thread #1 stalls for reason or another (branch prediction mistake, dependency hazard, etc.), it lets thread #2 to take over the execution core instead of letting it sit idle, so whatever program is running on that thread will continue to execute, instead of having all processes stall which is what would happen on a non-HT CPU... and if #2 stalls it lets #1 to kick back in... this is kinda crappy explanation, I know, but since you seem to understand HT fairly well I assume you get this

I'll try to summarize this... it doesn't make multiple instructions run on the same clock cycle, it lets the CPU to execute instructions from other processes when the current process stalls (makes sense? if not, forget about my summary...)

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2048Megabytes

Alright, now I believe the revised below definition is correct.

Intel's HyperThreading Technology allows a single processor to effectively create two logical processors to an operating system. A single processor can execute programs more efficiently increasing CPU performance. This simulates multiprocessing performance with a single processor. Performance will vary depending on the specific hardware and software you use.

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Processor: AMD Athlon 4000+ Socket 939
Motherboard: Foxconn 6100K8MA-RS
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