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

WJA96

WJA96

WJA96

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Joined
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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
 
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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
 
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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.
 
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.
 
Azza said:
Wowzer.


You tried changing the thermal paste on them?


Getting any more for Tri and Quad?
Click to expand...

I'm looking at the Accellero S1 conversion at the moment - and if I do that I'll change the TIM.

As for getting a couple more, I'm waiting now until the 4870's come out next week. I have two of those ordered for day of launch (25-6-08) and those I'm going to water-cool.
 
<maddness> said:
well the reason i didnt try this board was that i didnt want to be a guinea pig
especailly as the j&w p35 had some issues.

Hows the disk controller of this x48?

i thought id stick to asus, familiar with the bios (although its now got all this skewing nonsense amongst other unfamilar settings lol) etc..

have you tried an asus p45 board yet? they seem to be easily hitting 500mhz fsb
with the quad Q9's
Click to expand...

I've had 7 or 8 ASUS boards in the last 2 years and only the cheap ones have been stable or reliable. There are plenty of other manufacturers to choose from, so no, I've not tried ASUS.

What use is 500FSB+ if you need the 6x multiplier? I can produce screenies of that all day if you like. This board does 460FSB utterly stable (F@H/OCCT/Prime stable) with the 8x multiplier on my Q9450. That's a little over 3.6GHz and I haven't seen many boards that will better that.

What do you want to know about the disk controller? I'm using 2 disk RAID0 on the ICH9R, and that's fine.
 
<maddness> said:
lol go through this thread, http://www.xtremesystems.org/forums/showthread.php?t=189437

plenty of 7,8 & 9 multiplier quads easily doing 500 fsb

i can even do 495 with my yorky Q9250 at 6 & 7 on air all on default settings (not even messed around with voltages yet)

can this x48 even do 500 if you drop the multiplier, didnt come accross it in your review :D


i would have thought the x48 would have been using the newer ICH10 controller like the p45 range

be back later :D
Click to expand...

You sure you're not just here for a bit of thread-trash?

Yes, the motherboard will do well over 500FSB if the CPU is up to it. And none of the X48's use the ICH10R controller, but you knew that already, didn't you?

Now, if you actually have a sensible query on this motherboard, then ask away. Otherwise, why not go off and buy, use and enjoy something else?
 
<maddness> said:
all my questions and statements are valid
Click to expand...

I'm struggling to see what your purpose is though?

<maddness> said:
now back to the disk controller, does anyone else know if its any good
there were reported issues with the p3 series
http://forums.overclockers.co.uk/showpost.php?p=10807505&postcount=12
which may have plagued this board too
Click to expand...

There were no issues with the ICH9 on the P35 board. It wasn't an ICH9R, so they had to fudge it to make it run AHCI with NCQ under Vista. ASUS, Gigabyte etc. had all done that fudge out of the box, but J&W hadn't. They implemented it within a week in the next BIOS release.

<maddness> said:
also any results of this board giving >500fsb with the Q6/Q9's
Click to expand...

I'm not interested in blowing up a perfectly good Q9450 by using huge volts on it. If you check out what Cob has had to do to get over 500FSB on his P5Q he's having to use fairly big voltages to get it to run SuperPi. To get his best overclock with the Q6600 he's showing 1.6V in Windows, so I believe he's running 1.7V in the BIOS. I got to Page 9 in that XS thread and there was only 1 person

<maddness> said:
edit: while you're here

did you not get to try your ES chip, should be good to see results from as it is "known to run in excess of 500FSB" ;)
Click to expand...

Patience. That's in another Intel motherboard I have here for testing at the moment.

What are you running at the moment?
 
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