Comdex 2002
Written by Harry Lam and Edward Chang
November 25, 2002
SiS
At Comdex, SiS delivered a presentation detailing their four newest chipsets, as well as their Xabre 600 GPU. SiS showcased three chipsets for the P4: the 648, the R658, and the 655. Unlike VIA, SiS has obtained a license from Intel for all of their Pentium 4 chipsets (including the ones that were showcased at Comdex). On the AMD end of things, the SiS755 chipset was unveiled, which basically is SiS's solution for the AMD Hammer.
SiS P4 Solutions:
The SiS648 has been out for quite some time already, it's not really worthy of too much discussion. However the two new chipsets for the P4, the R658 and the 655, provide some new features to the Pentium 4 platform. The SiSR658 has been heralded before as Rambus' last hope; it's basically provides Dual Rambus support coupled with AGP 8x. The SiS655 combines dual channel DDR333 and AGP 8x with the P4.
Chipset | SiS655 | SiSR658 | SiS648 | Intel 845PE |
Northbridge | SiS655 | SiSR658 | SiS648 | Intel 82845PE MCH |
Southbridge | SiS963 | SiS963 | SiS963 | Intel 82801DB ICH4 |
System Bus | 533/ |
533/ |
533/ |
533/ |
Memory Type (best) | Dual Channel DDR333 | Dual RDRAM PC1066 | DDR333 | DDR333 |
AGP Speed | 8x | 8x | 8x | 4x |
UDMA | Ultra-DMA 133 | Ultra-DMA 133 | Ultra-DMA 133 | Ultra-DMA 100 |
USB | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
Hyperthreading Support | Yes | No | No | Yes |
Chipset | Intel 845GE | Intel 850E | VIA P4X400 |
Northbridge | Intel 82845GE GMCH | Intel 82850E MCH | VIA VT8754 |
Southbridge | Intel 82801DB ICH4 | Intel 82801DB ICH2 | VIA VT8235 |
System Bus | 533/400mhz | 533/400mhz | 533/400mhz |
Memory Type | DDR333 | Dual RDRAM PC1066 | DDR400 (unofficial) |
AGP Speed | 4x | 4x | 8x |
UDMA | Ultra-DMA 100 | Ultra-DMA 100 | Ultra-DMA 133 |
USB | USB 2.0 | USB 1.1 | USB 2.0 |
Hyperthreading Support | Yes | No | No |
Sis755 Chipset:
For the AMD Hammer platform, SiS is releasing their SiS755 chipset. I whipped up a chart comparing the different chipsets out there for the Hammer, and frankly there isn't much of a difference. However, those who are just waiting for the Hammer's release will be pleased to know that there are many motherboard manufacturers out there that have already implemented Hammer boards and are in the final stages of testing (as even SiS had working Hammer motherboard and chip).
Chipset | SiS755 | AMD 8151 | VIA K8T400 | VIA K8T400M | nVidia CrushK8 |
System Bus | 800mhz | 800mhz | 800mhz | 800mhz | 800mhz |
Memory Type (best) | DDR333 | DDR333 | DDR333 | DDR333 | DDR333 |
AGP Speed | 8x | 8x | 8x | 8x | 8x |
I/O | Ultra-DMA 133 | Ultra-DMA 133 Serial-ATA 150 |
Ultra-DMA 133 Serial-ATA 150 |
Ultra-DMA 133 Serial-ATA 150 |
Ultra-DMA 133 Serial-ATA 150 |
USB | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 | USB 2.0 |
Working version of the Hammer with the SiS755
Xabre 600
SiS also released their Xabre 600 GPU (which is manufacturer using a .13 micron process), which is an AGP8x card clocked in at 300mhz/300mhz. The SiS reps at Comdex said that their Xabre600 GPU was supposed to offer performance comparable to the ATI Radeon 9000. On paper it has a 1200Mpixels/sec and a 2400M textures/sec fill rate. We got to take a look at one of their cards up close, and it was running Hynix HY5DU283222F-28 chips running at 2.8ns (350 mhz).
SiS Xabre-2 Info:
SiS also dropped some information about their upcoming Xabre-2 GPU that's still in development (the best we could get on a release timeframe would be 2003 =P). Of course, they were quite reluctant to release very many details, but from what we could gather, it's supposed a DX9 part clocked in at a minimum of 300 core/300 memory (using DDR-2), if not faster. A rough estimate of it's performance should put it at about the ATI Radeon 9700. Obviously, since the Xabre 600 is a .13 micron part, the Xabre-2 will have to be .13 micron or lower.
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