[Tech Report] AMD's 790GX chipset - Overclock.net

SZayat · 3 Weeks Ago

Quote:

A new south bridge, with a twist
Unlike the 780G that came before it, the 790GX is not targeted at mainstream audiences. Instead, AMD is gearing this chipset toward the performance and multimedia crowd. That's an odd segmentation line because the 790GX doesn't actually bring any new multimedia capabilities to the table. The chip itself is identical to the 780G, so it has the same UVD video block, with full Blu-ray decode acceleration for MPEG2, H.264, and VC-1 formats.

What AMD has done with the 790GX is cherry-picked 780G chips that run comfortably with a 700MHz integrated graphics core. At this new clock speed, the graphics core gets a model number upgrade to the Radeon HD 3300. It also gets sideport memory that AMD has now taken to calling a performance cache. Chipset-integrated Radeons have long supported caches of onboard memory as a faster front line, backed by main memory, but few motherboard makers have taken advantage of the capability. That will apparently change with the 790GX, which has a 16-bit memory interface that can work with either DDR2 or DDR3 RAM.

StormX2 · 3 Weeks Ago

Biostar TFORCE TA790GXA2+ AMD 790GX Socket AM2+ $99.99 0 A1/New-not Adve

no stock yet =)

actually e just ordered 50 of them

for 99 bucks i bet these are not bad at all will probobly have stock Monday =)~

Licht · 3 Weeks Ago

Very interesting indeed. If i need to build another HTCP definitely going with this.

Melcar · 3 Weeks Ago

USB and SATA performance didn't seem to change much over SB600, which is a shame. I don't see anything here that would warrant an upgrade for someone with a SB600 based board. ACC sounds promising, but I doubt it will be in real world situations.

sLowEnd · 3 Weeks Ago

Quote:

Originally Posted by Melcar

USB and SATA performance didn't seem to change much over SB600, which is a shame. I don't see anything here that would warrant an upgrade for someone with a SB600 based board. ACC sounds promising, but I doubt it will be in real world situations.

Phenom overclocking?

FuNkDrSpOt · 3 Weeks Ago

Quote:

Originally Posted by Melcar

USB and SATA performance didn't seem to change much over SB600, which is a shame. I don't see anything here that would warrant an upgrade for someone with a SB600 based board. ACC sounds promising, but I doubt it will be in real world situations.

The main benefit is overclocking and stability.

I can overclock to 3.1Ghz, but i'll get the most random core calibration issues. It'll run fine through Futuremark but when i start up Firefox it'll crash everytime.

For those who already have an AM2 board or AM2+ this probably is not the most cost effective upgrade unless you NEED that extra 200 - 300 mhz upgrade. I'll probably wait for the Sb800's and wait for some benchies. By that time the 4870's will be sub $200 so maybe i'll upgrade both parts of my system.

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[Tech Report] AMD's 790GX chipset

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