Are you surprised by the benchmark numbers ? When we tested the board using a single 6600GT, we found it to perform even better than some of the bigger brands out there. When paired up with another 6600GT, the performance is improved in SLI mode.  This is all accomplished using the NF4 chipset. In addition tol the performance, this mainboard supports the Socket 939 Athlon 64FX processors. It supports 1GHz HTT, Dual Channel DDR400, 8 Channel Audio, 8 USB ports, 2 x PCI-E x 8 (or 1 x PCI-E x 16), GbE LAN. As it is based on NF4, you don't have the ActiveArmour and SATA II support.

The board comes with lots of overclocking options which you would not want to miss out. Most overclockers will be delighted to find the voltage adjustments of DIMM up to 3.1v, vchipset, FSB range up to 400MHz, multiplier from 8x to 25x. (See gallery for more). ASync 166,133,100 operation. HTT frequency can be set to 1GHz, 800MHz, 600Mhz, 400 MHz, width can be 8 or 16 bits.

I fired up the board with my FX-53 processor. Although this processor might not be as overclockable as the current ones, it could give us an indication on how far we can push it to. 300 x 8 works without any problems at all. I went on to find the maximum FSB the board. Lowering the HTT to 3x (600MHz), Async memory at 166MHz, Vcore at +0.05v, vdimm at 2.8v, vchipset at 1.8v, multiplier at 6x, I managed to get it all stable and running well at 330 x 6 with memory running just above 200MHz FSB (DDR400). That is using the Gigabyte 3D cooler heatsink which isn't really made for overclocking. SuperPI and 3DMark2003 completes the test without any problems. Running it at 1:1, I can achieve DDR600 Cas 3, 8-4-4 running at 300x8. (See gallery for overclocking options). The above is achieved using A02 BIOS which is supposedly a beta bios.

Overall, Jetway 939GT4-STD is an innovative design. It not only simplifies installation, it also drives down the cost to own SLI capable board due to the design. Something that deserves a mention is that Jetway managed to enable SLI using the NF4 and not compromising performance. Overclocking wise, this board do have potential and I am sure the extreme overclockers would be able do better than me. There is definitely room for improvement on its BIOS and packaging.

Pricing (US)

Pricing (UK)

Discuss

Pros

• USB 2.0 
• NVRAID
• 8 ch audio
• SLI

Cons

• No 1394a
• No Firewire
• No SATA II
• No Firewall

Ratings

Here are my ratings out of 10 stars.