2800+ with dual DDR

WinFlex · Nov 14, 2002

Here Tom's Hardware Guide tests an Nforce2 board with a 166mhz 2800+. There's only one thing I do not understand. They have a dual ddr board, but they don't seem to utilize it's full potential since they say that the maximum throughput of the board's memory bus is 2.6ghz/s. Don't these people know that DUAL ddr effectively doubles the memory bandwidth, or am I missing something....

james.miller · Nov 14, 2002

well it IS tom's hardware you know. take their reviews with a pinch of salt.

(i.e dont believe everything they say)

schmide · Nov 14, 2002

Sure there may be a theoretical bandwidth is 5.2gb/s but the bus on an AMD 166/333 FSB CPU is 64bits wide running at 333mhz which gives a throughput of 2.6gb/s. The Nforce2 board uses what they call a DASP (Dynamic Adaptive Speculative Preprocessor) see here to guess at memory loads and thusly optimize latency and throughput. Remember throughput is only as fast as its slowest link.

DaddyB · Nov 14, 2002

well if this is what you are referring to:

Compared to its predecessor with 133 MHz FSB, the clock speed and bandwidth of the new processor are increased by almost 20%. This gives you 2.6 GB/s (166 MHz x 64 Bit x 2 flanks = 2.6 GB/s), as opposed to 2.1 GB/s.

(on this page)

Then what they are saying is that 166mhz FSB has 2.6GB/s compared to the old 133mhz FSB, they are talking about the chip itself not the chipset, although schmide is right that is peak/theoretical bandwidth and will not be attained.

Check out this page to see how all RAM compares to other types, from PC66 to PC1066... Tom's has it right.

nealric · Nov 14, 2002

"The sample processor does reveal some special aspects, however: for all of the CPUs with the Thoroughbred B core (from Athlon XP 2400+ up to XP 2800+), the thermal diode doesn't work. This means that when there's a cooler defect, the motherboard will not be able to protect the CPU. A correct measurement of the die temperature is not possible. "

Is that really true?

JP_Singer · Nov 14, 2002

LOL What a POS I am so glad I went with a KT400 boaRd

ARGON · Nov 14, 2002

Was true for the sample AMD sent them. Hopefully it isn't true about the production chips! lol

litghost · Nov 14, 2002

rotflmao at JP_Singer, sry but kt400 boards are pos's, most kt333 outpreform kt400 boards, oh well so much for that *chuckle*

the point is that you cant trust Tom's hardware, go to http://www.anandtech.com/chipsets/index.html?rndn=11142002081831
there are two reliable reviews

JP_Singer · Nov 14, 2002

litghost said:
rotflmao at JP_Singer, sry but kt400 boards are pos's, most kt333 outpreform kt400 boards, oh well so much for that *chuckle*

the point is that you cant trust Tom's hardware, go to http://www.anandtech.com/chipsets/index.html?rndn=11142002081831
there are two reliable reviews

chuckle?
Please only one KT333 board out performed the A7V8X so far as I can find and I get a good increase with the 8X AGP enabled I am sure they will be hard to keep up with at all as new bios and drivers are released,and its "sorry" Not sry ROFLMAO at litghost

Stryfe · Nov 15, 2002

JP_Singer said:
LOL What a POS I am so glad I went with a KT400 boaRd

What makes the nForce bad in your opinion? The problem reading the die temp is with the processor, not the board.

2800+ with dual DDR

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