FSB 800 Muiltyplyer 12??? new cpu questions

C

curtains

New Member
I bought a new cpu AMD x2 4800+ 2.4ghz per core and if i muityply the 800 by 12 i get 9600 then i devide that by 2 (2 cores) i get 4800(guessing thats where the 4800 in the name comes from) .. but y .. wen its only at 2.4ghz shouldnt it only be like 400fsb?? i donno someone help me im all confused
 
The model name doesnt mean anything. And you are correct about the FSB, it should be that sync with the RAM.
 
Where'd you get 800FSB? The Athlons technically run at 200MHz FSB. 200MHz*12 = 2400MHz(it's clock speed)

Burgerbob said:
The model name doesnt mean anything. And you are correct about the FSB, it should be that sync with the RAM.
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No, you don't set the FSB the same speed as your processor.
 
yea thats wat i was woundering where did i get the 800 from if it was 400 i would no(cause duel core) but 800 thats y im confused.. Its a pretty clear 800.. even in bios and my overclocking thing(ai booster)(on my A8N 32 sli deluxe board) and same with muiltyplyer at 12 ... I havent started overclocking yet so .. yea thats y im woundering y its at 800 (tempture and everything is fine no overheating no freezing)
 
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Look up the info if you don't beleive me. These processors run at 200MHz FSB. They have HyperTransport, allowing them to hit 1000MHz, but the CPU's true FSB is still 200MHz. I don't totally know how that works...

The bus speed of the RAM and the bus speed of the processor are totally different. This is all handled by the chipset, and why you can have a processor running with a 200MHz FSB but RAM running at 800MHz, or whatever crazy numbers people are using today :P
 
The_Other_One said:
Look up the info if you don't beleive me. These processors run at 200MHz FSB. They have HyperTransport, allowing them to hit 1000MHz, but the CPU's true FSB is still 200MHz. I don't totally know how that works...
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I believe this gets into the quad pumped things, which is when something transfers data 4 times per cycle. It only runs at 200MHz, but 4 times as much data is being transferred. That's how it works for RAM, I'm not sure if it's the same for FSB.

The bus speed of the RAM and the bus speed of the processor are totally different. This is all handled by the chipset, and why you can have a processor running with a 200MHz FSB but RAM running at 800MHz, or whatever crazy numbers people are using today :P
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Well no RAM runs at 800MHz, but yes.
 
You probably have a HT multiplier of 4 currently, so:

FSB: 200Mhz
Hypertransport Mulitplier: 4 lanes
Effective Data rate: 200x4="800Mhz"
CPU Multiplier: 12
CPU Speed: 200x12=2400Mhz

If you still don't believe me, then download CPU-z and post a screenshot of it.
 
ok cool i kinda get it. so can anyone tell me wats the difference between HT and FSB i no they do quite similar things but ..
 
curtains said:
ok cool i kinda get it. so can anyone tell me wats the difference between HT and FSB i no they do quite similar things but ..
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FSB is simple: 200Mhz Quad-pumped, or "800Mhz effective"
HT, on the other hand, I haven't quite figured out. I haven't found any simple explanation for it. It somehow takes an FSB of 200Mhz and then has a HyperTransport multiplier that is selectable in the BIOS, usually between 2x and 5x (stock is 4x usually).
 
OK, maybe someone can clearify this to me as I'd like to know if I'm right or wrong...

The FSB is 201MHz on my processor. HT is 1005MHz. The multiplier is set to 11x.

201*11 = 2211MHz(my core clock)
1005*11 = WTF? :rolleyes:
 
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200MHz is the bus speed.
200MHz x CPU multiplier = CPU speed
200MHz x HT multiplier = HT speed.
CPUz does not list the HT multiplier there, so you don't know what the HT is. It's probably 4 or 5
 
I neva new this would make such decussion. So if HT and FSB are like the same .. or wat u say none is better than the other Y whould u use HT or FSB.. ???
 
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