SiS 756 is the new chipset supporting the PCI-E x 16 interface for Athlon 64FX Socket 939. In our tests, we compared the performance to other NF4 Ultra boards and ATi Express 200P board. In most of the categories, the SiS 756 is just slightly behind the NF4 Ultra boards. It won't be difficult to find that the ATi RX480 board tested seems to be fall behind in the performance race.

The board runs stable at CAS 2, 5-2-2 in our tests throughout. The reference board has a lot of options available in the BIOS. Similar options like FSB, ASync maxmemclk, HTT width, multiplier are available for adjustments. In our overclocking tests, we are only able to overclock the FX-53 raising the HTT to 225 and with a multiplier of 8. Anything higher results in no POST.

Although the performance is not bad for a start, we have yet to see actual retail boards based on this chipset. While other manufacturers are already on the PCI-E bandwagon with amazing pricing and features like HD Audio, SATAII support, 1394, SiS 756 might need to be paired up with its newer South bridge SiS 966 to compete head on in terms of features.

Overall, the chipset offers good performance and stability is there. It just needs some time to sort out who their target buyers are. Price is a big factor for SI while channel die hard SIS customers who loves to fiddle with mainboards will be willing to pay a little more for a better overclocking experience.

Pricing

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Pros

• Gigabit Ethernet
• USB 2.0 
• SATA RAID

Cons

• No 1394
• Need drivers to enhance performance
• No SATA II
• No HD Audio

Ratings

Here are my ratings out of 10 stars.