Jetway 939GT4-SLI: Gem with a New SLI Twist

Overclocking: Jetway 939GT4-SLI

Front Side Bus Overclocking Testbed
Default Voltage
Processor:	Athlon 64 4000+ (2.4GHz, 1MB Cache)
CPU Voltage:	1.55V (default 1.50V)
Cooling:	Thermaltake Silent Boost K8 Heat sink/Fan
Power Supply:	OCZ Power Stream 520W
Memory:	OCZ PC3200 EL Platinum Rev. 2 (Samsung TCCD Memory Chips)
Hard Drive:	Seagate 120GB 7200RPM SATA 8MB Cache
Maximum OC: (Standard Ratio)	244x12 (4x HT, 2.5-3-3-7) 2928MHz (+22%)
Maximum FSB: (Lower Ratio)	314 x 9 (2563MHz) (3x HT) (2826MHz, 2 DIMMs in DC mode) (+57% Bus Overclock)

The Jetway is a very nicely laid out nForce 4 board with excellent adjustments, and we fully expected that we would be recommending the Jetway to those who run at stock or only modestly overclock. Well, our expectations were far too modest!! The Jetway turns out to be one of the best overclocking nForce4 boards that we have ever tested and moves right up there with the DFI SLI and Sapphire/ATI single video Innovation board.

The Jetway turned in one of the highest overclocks at the stock 12X multiplier that we have ever tested at 122% or a 244 CPU clock. Lowering HT to 3X, we also reached one of the highest overclocks that we have ever achieved at lower multipliers by hitting 314 at a 9 multiplier. What's more, the Jetway was exceptionally stable at both overclocks, handling Super Pi and other benchmarks with ease.

Getting to these stratospheric overclocks on air is not as easy as many may think. There are a number of design tricks that the best overclocking boards use to reach these high performance levels, which is why smaller companies often do quite poorly in overclocking. It takes design staff and attention to detail to create a great overclocker - resources that are usually in short supply at smaller companies. We don't know where Jetway purchased this design excellence, but we can tell you that the Jetway 939GT4-SLI is a dynamite overclocker - one of the best that we have tested. With a lower selling price, the Jetway gives AMD shoppers a new choice in an enthusiast-level board.

This brings us back to the earlier question of whether or not the dedicated slots with no paddles, jumpers, or switches might improve performance. It is clear that the Jetway performs very well in overclocking, and if this design is the reason, then others should copy the Jetway design.