DFI Infinity 975X/G

Rob Williams

Editor-in-Chief
Staff member
Moderator
Long known for their overclocker friendly motherboards, DFI is back with a board for the highly popular and extremely powerful Core 2 Duo. Using Intels 975X chipset, the DFI Infinity 975 X/G looks to introduce the enthusiast crowd to Conroe, DFI style. Using the BIOS that shipped with the board, we got less than spectacular results, forcing us to go with a poplar Beta. How high could we get the FSB and is the board worth it?

You can read the full review here and discuss it here.
 

Rory Buszka

Partition Master
I would argue that on a board like this, the passive northbridge heatsink isn't a 'con' -- it eliminates a common point of failure and noise. If it provides enough dissipation area, I'd actually call the passive NB a "pro". That's my take.
 

Greg King

I just kinda show up...
Staff member
Without a fan blowing over the heatsink, it can get rather hot and to get a max overclock, I had to bump the voltage up from 1.6v to 1.7v. While that might not seem like a lot, overheating could cause instability issues. Did I run into any issues? No but I also know that not everyone will be as tedious with airflow as I am with my case.. expecially in water cooled cases. If the stock cooler was used or most any other flower shaped cooler, the air would blow over the northbridge and aid in taking some of the heat away from the NB.

While not a huge con, DFI is an overclocking company and most people who buy this board will want to overclock (thats an assumption of mine and could be wrong), and if they do, an actively cooled NB would certainly aid in stability when overclocking for those who do not have a well ventilated case. The argument can be made that anyone who OCs will be concerned with airflow and heat, and will have already taken measures to combat this but I stand by my opinion.

It's not a great cause for concern and if thats the only concern that I have besdes the board layout, the end user, as well as DFI, has little to worry about.
 
H

Happy_Games

Guest
I'd like to thank Techgage for a good review (we didn't even have to pay them hush money! lol).

I'd also like to thank them for the link to DFI-Street, home to everything DFI. We've been praising this board since the day it arrived, but even more since the 11/15/2006 beta bios (that I can say for sure is about to become official, and the official will also have the memory hole fixed so 4GB is detected inside windows (the bios detects 4GB, and it overclocks just as well with 4GB, but Windows XP 32-bit will only detect 2GB of RAM...and keep in mind, even with the memory hole fix, Windows XP 32-bit will still only detect around 3-3.5GB max, which is a Microsoft PAE problem, not a DFI bios problem).

We've easily hit 400FSB on this board with the latest beta bios. The one particular place I'd like to point Techgage readers who have or want this board is here:

DFI-Street's LGA775 Overclocking Database

and the discussion thread for LGA775 Overclock Database entries.

And I suppose one other important section is the Intel Overclocking subforum.

If anyone has any issues with regular, stock settings, please come ask us for help (make sure you read our forum rules! we are pretty strict but it's for a good reason)/

If anyone has any overclocking issues, again, please ask us or check the links I've provided.



Here are the two main rigs I've been using 24/7 for a while (first is my main rig for work/gaming, the second is a 24/7 test rig that is there to test things like memory timings comparisons, overclocking, gaming performance in real games, etc, and has 2x 7950GT's in SLI with hacked drivers running on it, which was also mentioned in the review!)

#1
DFI Infinity 975X/G (11/15/2006 beta bios)
Intel E6600 @ 334x9 (3.0Ghz)
2x1GB Corsair Dominator XMS2 DDR2-800 @ 4-4-4-12 (DDR667 divider)
3x Hitachi 80GB SATA II @ RAID-0
2x ATI X1900XT's in Crossfire
Corsair HX-620 psu
Creative Audigy2 ZS PCI sound
DangerDen TDX cpu waterblock + 2x DangerDen "Tyee" full-sized ATI gpu waterblocks + DDC pump, dual rad, etc
CM Stacker case

well I thought I had pics of the current mobo in the rig, but the link below is the EXACT same rig except with a different mobo/cpu...so just imagine the 975X/G and Core2 in this rig instead of the Lanparty CFX3200 that is in the pic haha:

http://www.angrygames.com/pics/cases/stacker_xfire-1b.jpg


#2 (abused test rig)

DFI Infinity 975X/G (11/15/2006 beta bios)
Intel E6400 (Allendale) @ 400x8
2x OCZ DDR2-800 (ATI Crossfire Certified DDR2) 5-5-5-15 (DDR533 divider)
2x Leadtek 7950GT 256MB PCI-E (SLI w/84.56mod2 hacked drivers)
Seagate 7200.10 250GB (16mb cache) SATA II hdd
NEC 3550A DVD-RW
Corsair Dominator Memory Cooling Module
Corsair Nautilus 500 external watercooling + Corsair's Nvidia 7xx0 gpu waterblock
Vigor Gaming ATX tower (modified CM Stacker case)
OCZ GamerXstream 700w psu

pics here: http://www.angrygames.com/Corsair/Nautilus/




In the pic you notice that the top 7950GT has the gpu waterblock, but the second 7950 does not (has an Arctic Silencer on it). This is the ONLY SLI setup that the Corsair waterblocks will not work on. 7800GT/GTX SLI, 7900GT/GTX SLI there is no problem at all...the problem is the 7950GT's are the same design, but shorter overall pcb, which moves the SLI bridge forward, right over the top of where the SLI bridge connects, and because of the fittings on the waterblocks, it is impossible to get the SLI bridge connected to the lower card with the lower card having a waterblock.

I've tried to modify the thing for a week but finally gave up and just went a single waterblock. I guarantee that both waterblocks work in SLI on everything but 7950GT's =/

anyway, again, great review. The Beta Bios will soon be official, and any help we can give Techgage readers, we will glady get yer clocks wound up ;)

Happy_Games (aka Travis, DFI Support Manager and DFI-Street Forum Admin etc....known as "that jerk" to most readers, and "loser" to friends!)
 

Rob Williams

Editor-in-Chief
Staff member
Moderator
You can sign up mister!

*grabs stick*

Thanks for the info man, much appreciated. Looks like a -very- solid board.
 

Greg King

I just kinda show up...
Staff member
Thanks for the kind words Happy. I have been a fan of your forums for quite some time now. The review was fun to write and the motherboard has been nothing but fun. I look forward to working with DFI in the future.
 
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