CGTalk - About Granite Bay's DC-DDR support.

View Full Version : About Granite Bay's DC-DDR support.

SMH

11-12-2002, 11:07 PM

Hi,

Here's on for our hardware gurus. I've been doing some research on Intel's upcoming E7205 Granite Bay chipset. It seems to be the company's answer to the nForce2, with very similar specs (8X AGP, S-ATA...ect.). Yet from what I read, it only provides DualChannel DDR support at 266Mhz FSB as opposed to nVidia's 333Mhz. Is this entirely true?

For those who are interested, the E7205 based motherboards should ship before the 20th of this month. The ASUS P4G8X is the most anticipated model.

GregHess

11-13-2002, 04:07 PM

Remember that P4's have a 533 FSB.

I believe Intel's GB chipset was slated for a PC2700 DC-DDR solution, which would involve 333 megahertz memory.

The early numbers bandwidth wise (for the ram) seem to follow that megahertz rating.

Only a day or so before the Xeon DCDDR systems are announced, if they have PC2700 (333 DDR) support, then the GB boards will as well.

SMH

11-13-2002, 09:06 PM

Hi Greg,

Thanks for the great feedback as usual. :thumbsup: I read something that you may want to inspect. Someone is claiming to have activated Hyper-Threading on a P4 2.4Ghz Northwood chip! The site did not report any performance figures, nor did it comment on the authenticity of the claim, just a short article and a few SISoft Sandra pictures:
-From VR-Zone:
-Short Article (http://www.vr-zone.com/#2742)
-Screen Shots (http://www.vr-zone.com/Home/news170/HT.htm)

GregHess

11-13-2002, 09:51 PM

Hey SMH,

Obivously you must be reading 3dluvr's techbits :). We snagged that earlier today. It does seem to be true. I'm sure we'll see some bios hacking of chipsets and such, to try to enable it on different boards.

Realize though...that Dell computers DISABLED Hyperthreading a wide gammit of systems they shipped because they found that OVERALL it reduced performance.

Remember hyperthreading is both a boon and a curse, depending on what your doing, and how your doing it.

Either 5-40% Increase, or 5-20% Decrease.

SMH

11-13-2002, 10:02 PM

"Either 5-40% Increase..." :drool: "...or 5-20% Decrease." Ouch! :D

GregHess

11-15-2002, 02:07 PM

Hey SMH,

Looking at the new 3.06 P4 it looks like they fixed most of the hyperthreading issues. So thus I'm changing my statement to take out most of the negatives. Looks like 0-40% Depending on app. Seems to help 3d apps in rendering a good deal. Of course it is still 600-700 USD. (The cost of an entire budget athlon system heh)

Also I just confirmed at least one motherboard manufacturer will have 333 PC2700 DCDDR support for the GB chipset. [Xeon Pacer as well] Intel's specification looks like PC2100 (266 DCDRR) but of course the motherboard makers have their own say in the equation.

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