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Overclock.net - Overclocking.net > Industry News > Hardware News | |
[OCClub] Crossfire vs. SLI Performance
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#111 (permalink) | |||||||||||||
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The Dark Passenger
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As I mentioned in the post you quoted, I have two other systems with Vista. After installation, (or reinstallation) I then spend quite some time disabling features in Vista that I have no use for. I'm not overly thrilled by being called idiotic. With the exception of the dubious benefits of DX10, for my use there is nothing that Vista provides that is better than XP64. Last time I checked MS is kicking Vista to the door pending the release of Windows 7 (which I haven't had an opportunity to try yet). XP lasted how many years compared to Vista? I consider an OS at its best when its in the background and unobtrusive. I don't spend oodles of time tweaking my OS, I don't use widgets, and I make an effort to disable every service that I don't need. With Vista, this takes considerable time and effort. If that makes me an idiot in your opinion then so be it. I didn't realize you worked for Microsoft...
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#112 (permalink) | ||||||||||||
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Overclocker
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Robilar speaks truth.
__________________Many businesses and computer labs don't use vista because there is just too much for the system to handle. A prime example would be Aero. Since it is not offered on the lower tiered Home bundle vs Ultimate then that would be a feature considered bloatware. Home has the least amount of bloatware, but business will still shy away from it. One of my coworkers love Vista, but would never ever put it on a lab workstation.
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#113 (permalink) | |||||||||||||||
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Overclocker
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I have to agree with you for the most part, Vista provides little improvements over XP- DX10 is somewhat disappointing, but I do think that UAC is a huge benefit- and probably the only one. Truthfully, (and MS does not want you to know this) Win7 is little more than Vista that has been pre-configured to have many of those "bloatware" services disabled. There are some really nice features in Win7 that could be implemented into Vista VIA SP3 (ie virtual XP), but really- Win7 is a re-skinned optimized Vista, in the same manner that NT, 2K, and XP all sported nearly the same kernel. That's it for me in this thread...truly sorry for the jack. If someone wants to further continue this discussion start a new thread and PM me.
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Maximus Overhaul *Updated 03/05/08* CPUz Valid 400x9 CPUz Valid 450x8![]() Ask me about my private DII Battlenet server. Quote:
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#114 (permalink) | ||||||||
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4.0ghz
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I said the presumption was idiotic. No offense to you at all. Quote:
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Never said that and I wish I did.
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Q9550 @ 4.0GHz
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#115 (permalink) | ||||||||||||||||||
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ATI Fiend
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http://www.tweaktown.com/articles/14...nce/index.html
There you go guys! Now let me say one thing, YES, THEY ARE TESTING CF, I KNOW; but it would still stand that if a cards in CF are bottle necked by PCI-E2.0 x8 (same bandwidth as PCI-E1.1 x16) then it's plenty safe to assume that they will be bottle necked individually ![]() AND YES, I did notice that tgains are minimal at best, but hey, the fact that there are gains proves my point. It's an old article. It was OCN awhile ago (it's dated June 08 ) There was a long thread about it in the news section. I wish I could dig it up for you, but the search feature is useless here ![]() Quote:
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Rly rly! Let me add one last thing. The only time you will see serious FPS differences between PCI-E2.0 x8 and x16 is at higher resolutions. At 1440x900, this scenario doesn't apply. At 2560x1600, it can make a big difference. Quote:
If HD4850's can saturate PCI-E1.1 x16, then I think some GT200 cores can too EDIT: Was reading other posts and noticed ![]() ![]() ![]() ![]() ![]() ![]() ![]() Quote:
End user review if you don't trust single sponsored reviews like TT.
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Last edited by RussianGrimmReaper : 04-30-09 at 04:23 PM |
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#116 (permalink) | ||||||||||||||||
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nVidia Enthusiast
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If you actually monitor the bandwidth usage of the PCI-e bus (I believe this is possible with a RivaTuner plugin), you would see the bus comes nowhere near to being saturated. Quote:
But technically, the 4870X2 actually has more latency than a 4870 1GB CF configuration. Because on the X2, both GPUs must communicate via the onboard PCI-e x16 2.0 chip, and then must again communicate with the system through the PCI-e bus on the motherboard. In the CF setup, the GPUs communicate directly through the CF bridge, which is significantly lower latency than the PLX chip on the X2. The difference in physical separation does not come into play.
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I called it!
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#117 (permalink) | |||||||||||||||
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4.0 GHz
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![]() Futile attempt to find a article remotely saying the bus is bottlenecked. If your so confident in your proof, why don't you quote us the section of the article instead of the entire review link? Because you have no solid proof!
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#118 (permalink) | ||||||||||||||||||
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ATI Fiend
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(New post because the other one is on a slightly different subject)
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You have to remember though, the GTX 295 has only 48 more SPs than a pair for GTX260-216s. Also remember, NVidia has ALWAYS been terrible with sandwiched cards. It's a fact, they're just bad at writing the drivers. A pair of 260-216s can also be clocked higher because of the lower heat. Technical specs can only make a card so powerful, it's the drivers that unlease the true beast. The GTX 295 is being choked by it's collar, the GTX 260-216 isn't. Quote:
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Using different boards can only impact performance so much. I'm sure Rob will gladly re-test using identical boards if you're that insisting.
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#119 (permalink) | |||||||||||||||||
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ATI Fiend
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![]() Are you saying that there is a speed difference between PCI-E2.0 x8 and x16? I always understood it as a difference in bandwidth. If it isn't bandwidth that is increased by double the amount of lanes of the PCI-E2.0 bus, then yes, you would be correct. An increase in speed would cause a pair of HD4850s on a P45 to be consistently faster than on an X38/48. Quote:
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The CrossFireX bridge offers only 900MiB/s and is uni-directional.
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Last edited by RussianGrimmReaper : 04-30-09 at 05:07 PM |
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#120 (permalink) | |||||||||||||
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4.0 GHz
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ehhh i don't think it's a bandwidth issue at all. its just that x48 is a better chipset than P45. the best way to test is a 4850 with the bus port covered with a tape to get pure 8x bandwidth, on the same motherboard.
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Ultimate Quad Core Clock for Clock Benchmarks: Thesis/HTPC Notebook: Puma's Cartwheel
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