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post #11 of 23 (permalink) Old 01-26-2019, 01:21 AM
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And what about that article, compared to the video I've provided? Someone has to lie, it seems. I've never heard any good input on Crossfire from people with high end desktops after introduction of 290X.

Also, https://www.purepc.pl/karty_graficzn...znych?page=0,5. I believe you can read FCAT readings, these provide real information about Crossfire issues. It's a 295x but 295x is just 290X on one PCB, acting the same as 290X in Crossfire.

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post #12 of 23 (permalink) Old 01-26-2019, 01:51 AM
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Quote: Originally Posted by BroadPwns View Post
And what about that article, compared to the video I've provided? Someone has to lie, it seems. I've never heard any good input on Crossfire from people with high end desktops after introduction of 290X.

Also, https://www.purepc.pl/karty_graficzn...znych?page=0,5. I believe you can read FCAT readings, these provide real information about Crossfire issues. It's a 295x but 295x is just 290X on one PCB, acting the same as 290X in Crossfire.
I don't think any of them lied. But, the YT video i noticed used 1080P. Scaling at the rez adds difficulty to multi-gpu. One other thing is the temps of the cores are reaching 70 and for sure where on air. The 290(X) are hard to tame on air. When core reaches 70, the VRMs on AIR are reaching higher temps to cause throttling. Here were my 290s one setup was when one 290 was still on air (just got it and tested it before water cooling). The other pic was when both on water. See the GPU2 throttling? It was the lower one near the PSU.
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post #13 of 23 (permalink) Old 01-26-2019, 01:54 AM
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BTW this is what happens when cpu runs out of core or not strong enuf to support crossfires in Multi-threaded game. Sandy i7 2700K HT On and Off. For awhile BF3 was broken with HT is On.
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post #14 of 23 (permalink) Old 01-26-2019, 01:56 AM
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I've rocked 290X Tri-X, VRM never reached 85C when overclocked to 1150/1625 and +100mV voltage bump (1.289V according to HWiNFO), 82C on core with Conductonaut was the biggest temp I've had. After replacing cooler with Kraken G10 + X60 combo, after overclocking I reached 105C on VRM while it had no radiators at all, then 82C or so after adding a combo that Gelid offers. but it still did not throttle even once, at all. But then it got killed because a drop of Conductonaut got in between thermal pad and one of the VRM :v

The hell you use then, that you throttle? Also, your GPU usage graph tells perfectly how atrocious Crossfire work.

Also, just saying that 4790k @4.5GHz beats 2700k by a lot and 5930k runs circles around 2700k. And it's not just 1080p.

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post #15 of 23 (permalink) Old 01-26-2019, 02:06 AM
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Quote: Originally Posted by BroadPwns View Post

Also, just saying that 4790k @4.5GHz beats 2700k by a lot and 5930k runs circles around 2700k. And it's not just 1080p.
When did i say that? Im pointing out how Hyperthreading helps (or a more powerful cpu) in a certain scenario.

That test i showed was Heaven bench at 1080.

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post #16 of 23 (permalink) Old 01-26-2019, 02:09 AM
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Quote: Originally Posted by rdr09 View Post
When did i say that? Im pointing out how Hyperthreading helps (or a more powerful cpu) in a certain scenario.

That test i showed was Heaven bench at 1080.
" But, the YT video i noticed used 1080P. Scaling at the rez adds difficulty to multi-gpu."

Unless you were not referring to the video I provided. I'm a little bit confused, whether you write theories/use cases or refer to articles I link here as obviously HT helps a lot in almost every aspect. And I'm still amazed how did you manage to throttle down 290X. What are the temps then, if my unit did not throttle with VRM at 105C?

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post #17 of 23 (permalink) Old 01-26-2019, 02:15 AM
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Quote: Originally Posted by BroadPwns View Post
" But, the YT video i noticed used 1080P. Scaling at the rez adds difficulty to multi-gpu."

Unless you were not referring to the video I provided. I'm a little bit confused, whether you write theories/use cases or refer to articles I link here as obviously HT helps a lot in almost every aspect. And I'm still amazed how did you manage to throttle down 290X. What are the temps then, if my unit did not throttle with VRM at 105C?
It was a reference 290. It got hot quick inside a HAF 212. Anyways, i got to go play now. See you.

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post #18 of 23 (permalink) Old 02-04-2019, 04:35 PM
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Quote: Originally Posted by Ragsters View Post
If your asking if you should buy a 2070 vs 2 x 580 then the answer is pretty simple. Stick with a single more powerful card and later if you wish, get a second 2070.
2070 don't SLI.

Always go for single GPU setup, "it just works" unlike SLI/CF.
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post #19 of 23 (permalink) Old 02-04-2019, 04:54 PM
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SLI and CF are both effectively useless these days. As noted previously, when devs go out of the way to support it's ok but these days neither Nvidia/AMD and the developers are focusing on it. As has always been the case, single gpu is best.

I contemplated Crossfire 580's as well but it's just not worth it, despite the dirt cheap prices. Then again, buy two, test it and sell them if not happy. Really won't lose out on much financially (if we are talking buying used 580's here). If not happy, then spend more on a better single gpu.


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post #20 of 23 (permalink) Old 02-04-2019, 05:10 PM
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Sli is still pretty decent, but Pascal is getting long in the tooth and Turing will have short lived usefulness so I would avoid sli at this time. Unless you can get a real deal, but you probably can't. AMD has all of the deals right now.

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