- Jul 12, 2001
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Looking for a quality mb for my new opteron 144. Budget is between $60-100. Any suggestions? Thanks much!
Originally posted by: piginspring
Epox used to make some highly respected mb's which have excellent oc capability. How come now the only two players are just ASUS and DFI?
I can afford the extra 14 bucks for the DFI. But even for these two boards, i.e., A8R-MVP and DFI ultra-d, there're still quite some issues, poor usb performance, incompatibility with certain memoery etc. Are there any other good choices? Thank you all!
Originally posted by: piginspring
Also, a bit confused about the "excellent oc capability" of the opteron's. Since they have low multiplier, don't those a64 3xxx+ have better chance of oc?
Originally posted by: poohbear
If i had pci-e, the ONLY option for me would be dfi to maximize on my lil opty.currently running it @ a paltry 274HTT x9 cause the dualsata2 has a 274mhz cap.
my opty baby handled it no probs.
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Originally posted by: 5t3v0
...
For a low multi cpu, it is even more important to have a top board than with a high multi cpu because HTT frequency will be higher. I wish I'd realised this at the start.
Originally posted by: 5t3v0
Since a 144 has a low multiplier, overclocking is achieved by using high HTT (> 280MHz). Since most value & midrange RAM will not run 1:1 at this speed, it becomes necessary to use a memory divider. Most boards only offer the basic 4: 100 (1:2), 133 (2:3), 166 (5:6) and 200 (1:1). DFI is the only manufacturer to offer more options in between which gives you much more flexibility for setting memory speed.
If you take my example of a 144 overclocked to 2.5GHz (9x280). The 166 divider gives a memory frequency of 229MHz, where as the 133 divider gives 180MHz. Unless you have memory that can handle 229MHz, you are forced to underclock to 180MHz. Not a big performance loss in games but annoyingly wasteful none the less.
The DFI has 120 (3:5), 140 (7:10), 150 (3:4) & 180 (9:10) dividers which at the 280HTT, allow for memory speeds of 168, 194, 210, and 252 respectively.
If I was buying a mobo all over again, I would get the the DFI Ultra-D, in fact I might still & sell this Epox on ebay. I might also be able to improve on this disappointing cpu overclock at the same time!
Originally posted by: Budarow
I'm in the same boat...I'd buy an Ultra-D and just make sure the memory I bought has a reputation for "playing nice" with the Ultra-D. However, I have a 20-pin PS and apparently the Ultra-D sometimes has issues when not using a "native" 24-pin PS. I'm considering an Abit kn8 Ultra which sells for ~$90 but I need to so some digging regarding the kn8, 20-pin PS' and ocing. I'd like to buy the Abit AN8 Ultra, but either the price is too high (e.g., ~$125.00) or it's not in-stock.
I'm just not too happy with the mobo choices/prices these days...I wish ATI would hurry up and get their SB600 chip out already and drop their prices $70 for the Sapphire Pure with SB600![]()
Originally posted by: Copperpipe
If I had an Opteron 144, a strong 20-pin PSU, and limited budget, I'd give the new Asrock 939SLI32 mobo a try. Preliminary reports indicate it's a great overclocker, has decent performance, and has a couple more features (SLI, gigabit LAN, 1394, etc) than the Asrock ULi 1695 (Dual SATAII) board, and only costs about $80.
Somehow I've got a feeling that the 1697 chipset will enable higher HTT speeds without any of the cold/warm boot or 274 mhz oddities of the 1695 board although this is purely speculation on my part.
Originally posted by: 5t3v0
Its true that there's no perfect motherboard these days. They all all seem to have their design flaws or incompatabilities. Budarow is right about the Epox ATX power socket, its in a right stupid place. Luckily I have a new psu with very long cables. The Ultra-D also has its design gaffs. The chipset hsf for instance is placed underneath the video card slot so if like me you've got a large 3rd party vga cooler, you've got to do some mods to it to get it to fit. Quite a few boards dont leave enough space around the cpu socket for the popular larger coolers. The list goes on. When you consider what you're paying for a board these days compared to the socket A days, its all very frustrating.
In answer to piginspring's question, the 146 is a better option if you dont have a board that can handle the higher HTTs. However, on a goad board, the 144 will overclock almost as well & therefore deliver the best bang for buck. Just gotta find that perfect board....
Originally posted by: 5t3v0
nothing ventured, nothing gained. that's my moto m8. gets me into all sorts of bother.