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P45 vs x38/x48 - Page 3

post #21 of 42
Get an DFI X48 and an 4870x2 and you'll be set.
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post #22 of 42
Quote:
unless you're a super-enthusiast gamer
<-------

EDIT: NOU, don't listen to the Anime chick. There's no reason to get an X38/48 if you're NOT GOING TO CF. It's a waste of a perfectly decent x16 lane to have sitting around, if you're only going to use 1 card, get a P35.
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post #23 of 42
I would still go with a x38/x48 simply because you never know what you'll want to do in the future. If he ever does want to use crossfire after buying the P35, well, that means he'd have to go and buy a whole new board to do so.
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post #24 of 42
Thread Starter 
For the record, I won't be going with DDR3 memory. I started a thread asking about the performance differences between DDR2 and DDR3 and I'd have to pay much more than I'd want to in order to see a significant price increase. In the end, it was said top-notch DDR2 performs pretty much on par with low-end DDR3.

I'm gonna try to find more WiC benchmarks at 1680x1050. That's the most graphics-intensive game I have right now and that's the resolution I plan on gaming at. I'm pretty sure a HD 4870 might be overkill for this resolution, let alone a pair in CrossFire, but I never know if or when I'll upgrade to a bigger monitor.

I've studied the differences between the x38 and x48 chipsets and all I can find is official 1600 MHz FSB support for the x48. I don't see the point in reaching for an x48 board unless they're more stable.

I'm gonna check out DFI's site and research their x38 mobo options. I've only been focused on Asus because I hear they have an extremely good track record and their boards look like they have quite a few bells and whistles.
post #25 of 42
Thread Starter 
I've searched for CrossFire performance comparisons between the P45 and X48 chipsets and I've only found one site with any information with tons of others linking to it. I don't think they were thorough enough because they only tested CF with maxed setting on the highest resolution. I don't remember seeing anything at 1680x1050, either. If CF performance on a P45 doesn't suffer too much at that resolution, then I'll get that instead of a x38 board. The only way I'm getting a x48 mobo is if they are known to provide higher stable overclocks.
post #26 of 42
I'd go with the X38/X48 if you want to go crossfire. The difference in bandwidth does make a difference.

You can find a X48 DFI board for $160 too, so don't think it will cost much, if any more money.
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post #27 of 42
Thread Starter 
I know it makes a difference, but how much of a difference at the 1680x1050 resolution? I see the difference is pretty huge at 2560x1600, which has more than double the pixels.
post #28 of 42
Quote:
Originally Posted by chessmyantidrug View Post
I know it makes a difference, but how much of a difference at the 1680x1050 resolution? I see the difference is pretty huge at 2560x1600, which has more than double the pixels.
These tests are at 1680x1050, 1600x1200 and 1920x1200.

Remember that all the tests are done with PCI-e 2.0, so 8x would be the bandwidth of a PCI-e 1.1 slot.

http://www.tomshardware.com/reviews/...0,1915-10.html



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post #29 of 42
Here is the review on the P5E.

When the reviewer peeled the P5E sticker off the motherboard, it says maximus formula underneath

Best X38 choice price - performance wise.


http://www.xbitlabs.com/articles/mai.../asus-p5e.html
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post #30 of 42
It's been said before, but it's silly to bother to CF with a P45, the bandwidth degradation should be enough to scare you away, not to mention you're paying a bunch of money anyway for the second card.
Quote:
In the end, it was said top-notch DDR2 performs pretty much on par with low-end DDR3.
Eh, not exactly, DDR3 in general doesn't vastly outperform 2 because of its crappy timings, they really hold them back. Not to mention the price.
Quote:
I've studied the differences between the x38 and x48 chipsets and all I can find is official 1600 MHz FSB support for the x48. I don't see the point in reaching for an x48 board unless they're more stable.
Well said, there really isn't a difference, sometimes X48 models just add pipe cooling instead of straight up heatsinks, but aside from the FSB issue they're pretty much exactly the same.
Quote:
I'm gonna check out DFI's site and research their x38 mobo options. I've only been focused on Asus because I hear they have an extremely good track record and their boards look like they have quite a few bells and whistles.
Go ahead and do that, you'll find that DFI has their own track record of making very high-end enthusiast OC'ing boards, not to mention the most extensive BIOS options I've ever seen (I own the DK X38 and the DK P35). Obviously I'm biased, but I would say that the X38 can do you no wrong, it'll CF and OC like a champ (it got my E6400 a 1GHz gain--see sig rig).
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