Jetway 939GT4-SLI: Gem with a New SLI Twist
by Wesley Fink on August 24, 2005 8:30 AM EST- Posted in
- Motherboards
Memory Stress Testing
Our memory stress test measures the ability of the Jetway nForce4 to operate at its officially supported memory frequency (400MHz DDR), at the lowest memory timings that OCZ PC3200 Platinum Rev. 2 modules will support. All DIMMs used for stress testing were 512MB double-sided (or double-bank) memory. To make sure that memory performed properly in Dual-Channel mode, memory was only tested using either one dual-channel (2 DIMMs) or 2 dual-channels (4 DIMMs).| Stable DDR400 Timings - One Dual-Channel (2/4 DIMMs populated) |
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| Clock Speed: | 200MHz |
| CAS Latency: | 2 |
| RAS to CAS Delay: | 2T |
| RAS Precharge: | 7T |
| Precharge Delay: | 2T |
| Command Rate: | 1T |
Using two DIMMs in Dual-Channel 128-bit mode, the memory performed in all benchmarks at the fastest 2-2-2-7 timings at default voltage, which was the only memory voltage available.
| Stable DDR400 Timings - 4 DIMMs (4/4 DIMMs populated) |
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| Clock Speed: | 200MHz |
| CAS Latency: | 2.0 |
| RAS to CAS Delay: | 2T |
| RAS Precharge: | 7T |
| Precharge Delay: | 2T |
| Command Rate: | 2T |
Tests with all four DIMM slots populated on the Jetway 939GT4-SLI required a 2T Command Rate with 4 DIMMs in two dual channels. This is the pattern seen on every other top-performing Socket 939 board. This performance is completely competitive with the best that we have seen on nForce4 motherboards for Socket 939.
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joex444 - Wednesday, August 24, 2005 - link
Maybe a lil OT, as it applies to any SLI board, but:Can you run a video card in one of the green slots and then use a PCIe RAID5 card, like the Areca x8 RAID5/6 8 port SATA card?
I do need RAID5, I run a development web server with a SQL server on my PC.
Furen - Thursday, August 25, 2005 - link
I would guess yes, since you can throw a 1x device onto 16x slot and they work fine. Of course your graphics performance will be slightly worse, but the difference should be negligible.Leper Messiah - Wednesday, August 24, 2005 - link
$129 SLi board with this kind of performance? I'm there! Dual core 3800+ Jetway mobo, and an x800xl or something for now seems to be very tempting right now...slsmnaz - Wednesday, August 24, 2005 - link
Why is an SLI board w/ an x800xl tempting?OvErHeAtInG - Wednesday, August 24, 2005 - link
Because he could upgrade to 7800 GTX/GT SLI's when the price comes down.ncasebee - Wednesday, August 24, 2005 - link
You are sure that this is the same board as the one included in EVGA's free mobo deal? If it is, I see no reason not to get this board, and save myself the money.Furen - Wednesday, August 24, 2005 - link
You could always ask EVGA directly... say something like "I've heard good things about the Jetway motherboard and was wondering if they are manufacturing it for you" or something of the sort, heh.Furen - Wednesday, August 24, 2005 - link
OK, I went into EVGA's support forums and though the motherboard is a rebranded Jetway they are pretty behement about you not using the Jetway bios. It might just be them throwing a bit of FUD at you but I just wanted to point it out. By the way, it seems that their current bios is a bit flaky on the overclocking front (Jetway's has already been fixed, it seems).Calin - Wednesday, August 24, 2005 - link
than on other boards made by Jetway. We had one board (from several bought less than three years ago, in several months) gone bad - the capacitors were dead.Other than that, I wonder if one could use all three PCI-E slots (having one 16x card and two 8x cards), and if not, a chipset change could solve that
Calin
joex444 - Wednesday, August 24, 2005 - link
Remember that this is just a paddle-less design. With the paddle you can't use the 2nd PCIe x16 slot if it is set to single mode; you need to switch the paddle to dual mode which cuts it to two x8 slots each physically having a x16 connector. Either way, there are only 16 usable lanes.It's the same thing, plug a card in the yellow and the "paddle" is set to single x16; plug a card in the green and the "paddle" is set to dual x8.