CPU/Hyper Threading Question

October 4, 2009 at 10:53:39
Specs: Windows XP 64
I was thinking about upgrading to an AM2+ quadcore on my current board but i may not depending on the performance.

*This message refers to my question. as listed from my mobo manufacturer (gigabyte)

Note: If you install AMD AM2+ CPU on AM2 motherbord, the system bus speed will downgrade from HT3.0(5200MHz) to HT1.0(2000 MT/s) spec; however, the frequency of AM2+ CPU will not be impacted. Please refer "CPU Support List" for more information.

I'm not exactly sure how AMD's FSB/HT, or whatever you want to call it, works in this case. The new CPU runs at 3ghz 3600MHz HT but my board runs at 1000MHz Hyper Transport (2000 MT/s). Will there be a performance drop if i use this board instead of a HT3 (5200MHz) board. My main concern is gaming
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any help is appreciated.


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#1
October 4, 2009 at 11:37:24
Well yes. Any time you can't use your processor to its full potential there will be a performance yeld.

Iron Sharpens Iron.


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#2
October 4, 2009 at 16:01:25
And if you're not gonna be using DDR2-1066 with your AMD X4, you'd taking an additional performance hit.

BTW, what does Hyperthreading have to do with anything?? Do you mean HyperTransport? AMD abandoned the FSB many years ago...HyperTransport replaced it.


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#3
October 4, 2009 at 18:18:32
ya i meant hyper transport >.< i already have 4gb ddr2 800 in this board, not upgrading that. was only a cpu question.

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#4
October 4, 2009 at 21:32:50
Well you are hitting the minuim ram speed of what you should run the Phenom, but that's not as big of a deal compared to the hit that you are taking with the HT speed. You should just get an AM2+ motherboard, at least that will solve the big HT hit that you are taking using an AM2 motherboard with a Phenom quad core.

Iron Sharpens Iron.


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#5
October 5, 2009 at 14:21:22
"that's not as big of a deal compared to the hit that you are taking with the HT speed"

True, but what I was getting at is the double whammy...wrong HT speed + wrong RAM = larger peformance hit.

Since you don't wanna replace the RAM & I'm assuming you don't wanna upgrade the board, why not just get a CPU that's better suited to your current board/RAM combo? A quad isn't really necessary.....yet.


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#6
October 5, 2009 at 14:39:37
Oh sorry jam that comment wasn't directed to your 1st post on here, I was just stating that the HT hit is why he should def upgrade to an AM2+ motherboard alone.

But here is an interesting read Jam about the perfomance hit and gains when using slower ram on a phenom based processor if you want to check out.

http://ixbtlabs.com/articles3/cpu/a...

Iron Sharpens Iron.


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#7
October 6, 2009 at 05:57:27
I wish they had tested using DDR2-667 & DDR2-800 settings too, just to see if it holds true with all the various possibilities or if it has something to do with the 533/1066 relationship. But thanks for the article.

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