**The Official J&W JW-X48D2-Extreme Thread**

WJA96

WJA96

WJA96

Soldato
Joined
13 Jul 2005
Posts
19,348
Location
Norfolk, South Scotland
After what seems like FOREVER, we can finally play with the J&W X48D2-Extreme.

Available from OcUK here.

The maufacturer's home page for the board is here.

Latest Drivers

Latest BIOS

The key features for me, as an enthusiastic overclocker, are the on-board diagnostics, the onboard start and reset switches, and the CMOS reset button the back panel so you don't have to open the case up again once you've closed it.

Pack Shots are always a must in these threads!

Main Box

008sm.jpg


Open the lid

009sm.jpg


The board is very well protected (boards shipping from OcUK may not have a Q9450 installed ;))

007sm.jpg


The bundle is basic, but everything you need is there.

006sm.jpg
 
Last edited:
Overclocking BIOS Options

Top of the JustWoot! Page
JustWoot1sm.jpg


CPU FSB goes all the way to 999, so that should be enough for most folks.

The CPU strap is very effective in removing the guesswork required to boot the CPU at the various settings. It automatically shifts the various voltages to make sure the system is stable at those FSB ranges. It also controls the available dividers though. So at the 400MHz strap setting, only the 1:1 divider is available (shown as 667MHz as 333MHz is the CPU's start FSB). With the 333MHz strap, the 800MHz divider also available, and so on.

And the rest of it
JustWoot2sm.jpg


All the major voltages are here, with the GTL options also present. There's plenty of adjustment to wreck anyone's CPU with this lot.

The RAM timings are pretty limited compared to say, DFI, but then who actually uses all those extra options anyway? If you do, then you'll have already bought a DFI board, I reckon. You do get a 'safety net' set of RAM timings though, so you can set 3-3-3-8 and the system will try and boot that, but when it fails it boots the overclock with looser RAM timings. It definitely helps you diagnose when the RAM is the issue, and when it's the CPU. I think it's pretty useful.

JustWootRAMsm.jpg


CPU Voltages up to 2.2V in steps of 0.0625V

Interestingly, the CPU 'safe' indicator for a 9450 shifts from yellow to red (danger) at over 1.4V - You have been warned!

CPUVoltssm.jpg



RAM voltages go all the way up to 3.3V. I'm sure someone wants that.

RAMVoltssm.jpg


First overclocking results would seem to show the board is pretty good with Yorkfields

Q945037GHZ.jpg


http://valid.x86-secret.com/show_oc.php?id=375466
 
Last edited:
Cob said:
Nice!

What's the highest FSB you can reach with the Q9450?
Click to expand...

475 x 8, but it's not properly stable at that. I need to figure out the GTL settings for this. It's miles easier to clock than the DFI though.

I saw your 3.9GHz on the IP35-Pro and the cracking SuperPi you posted. That gives me something to aim for!
 
Q945038GHz.jpg


It is reasonably stable at that, but only by putting silly volts through the CPU and chipset (VTT & PLL), and I don't see the point of killing a perfectly good CPU when it's not the board holding it back. I have an ES Yorkfield with a 7x multiplier that is known to run in excess of 500FSB, so that's next I think.
 
Has the price or the Graphics releases killed interest in this board?

Shame , thought this would be the one item i knew i could base a new build about, not so sure now.

was hoping for lots more info than we have todate.

Bowza
 
WJA has already posted a ton of info as always great source of information I bought the IP35-pro based on one of his posts and it's a rock solid board. This x48 board seems to be really damn good, to bad I can't afford another upgrade.
 
build quality, users experiances etc

i am not disputing the work WJA put in but thats one persons viewpoint, sorry was hoping to see other reports by now, maybe I expect too much,

How does it compare up against cheaper boards that are not called value DFI etc

Hey ho maybe its just me
 
bowza said:
build quality, users experiances etc

i am not disputing the work WJA put in but thats one persons viewpoint, sorry was hoping to see other reports by now, maybe I expect too much,

How does it compare up against cheaper boards that are not called value DFI etc

Hey ho maybe its just me
Click to expand...

The market for £150+ motherboards is pretty small. Most folks who wanted X48 already have their boards. I also think OcUK have got their pricing wrong, and that's totally deflated all the initial excitement. But that's just my opinion. It is a premium product, and the packaging reflects that. As regards build quality, I have two boards and both are identical in terms of performance. I couldn't tell a good motherboard from a bad one in terms of build quality - what should I be looking for?

It buries the DFI LT board and the Gigabyte X48-DQ6 in terms of cool running, absolute overclock, and ease of use. The DFI is a good board, but the northbridge runs hot. You almost have to have a fan on the cooler, or it crashes under extreme overclocks. There are too many options in the BIOS to be sensible, but that's the market they aim for. The Gigabyte is a good board if you like that design, but it's more money and it's nothing special. The way OcUK handle ASUS RMAs rule those boards out for me as I'm not prepared to wait 8 weeks for a repaired board to come back.

I'm just benching one, then two X4850's on this board, and I'll post benchies ASAP.
 
You must log in or register to reply here.
Back
Top Bottom