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3x R9 290s....tri-fire...unplayable on bf4 in 7680x1440 - Page 2

post #11 of 146
Quote:
Originally Posted by Stay Puft View Post

Overclock your processor more to something like 4.5Ghz. If i had to guess your cards are stacked and downclocking severely

Yeah, thermal throttling is my guess. Also, the PCIe configuration is 8/4/4 with 3 cards. I don't think that would be a severe bottleneck but it definitely isn't good. Also, double check silly things like crossfire connectors. Screenshots of your in game settings and CCC settings will help us see if any weird settings are screwing you up. Try testing just 2 GPUs. Also try resetting everything to stock clocks, might be a bad overclock.
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post #12 of 146
Quote:
Originally Posted by MME1122 View Post

Yeah, thermal throttling is my guess. Also, the PCIe configuration is 8/4/4 with 3 cards. I don't think that would be a severe bottleneck but it definitely isn't good. Also, double check silly things like crossfire connectors. Screenshots of your in game settings and CCC settings will help us see if any weird settings are screwing you up. Try testing just 2 GPUs. Also try resetting everything to stock clocks, might be a bad overclock.

X4 3.0 is plenty

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post #13 of 146
Quote:
Originally Posted by Stay Puft View Post

X4 3.0 is plenty

you cant use a 30%+ slower card to compare a tri fire setup.
post #14 of 146
Quote:
Originally Posted by PontiacGTX View Post

you cant use a 30%+ slower card to compare a tri fire setup.

290 is not 30% faster then a 7970. More like 15-20 and I just used the graph to show that different PCI speeds don't hamper cards as much as people think they do
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post #15 of 146
x4 3.0 is not plenty. Rofl.Especially when you use 3 1440p monitors and 3 cards with no crossfire bridge
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post #16 of 146
Quote:
Originally Posted by sugarhell View Post

x4 3.0 is not plenty. Rofl.Especially when you use 3 1440p monitors and 3 cards with no crossfire bridge

Proof please. smile.gif
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post #17 of 146
Why you have a proof? You just have a stupid graph from 1200p with single gpu. I had eyefinity with 4 7970s. And yes you need at least pcie 3 x8

Go read some informations about new crossfire tech then try to recommend again pcie x4

A i5 is weak for tri-fire. When you use crossfire you move more data. When your cpu is already at max from the game expect a bottleneck. Also the last pcie goes through the sata ones
Edited by sugarhell - 1/11/14 at 10:08am
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post #18 of 146
Ask tsm106 for some trifire and quadfire results. Or sugarhell. tongue.gif

4x is definitely NOT enough for 3 high end cards like this. And the i5 is most definitely holding back those 3 cards.

Yes, an i5 is a great budget gaming CPU. However you're talking over $2000 worth of GPU's, running on a $200 CPU. It'd be like asking why an i3 bottlenecks crossfire 7950's.

OP
Mark my words. In order to FULLY utilize your very expensive and awesome GPU setup, you will absolutely need a better CPU and motherboard. You should be looking at LGA 2011 and a 4820k minimum.
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post #19 of 146
Fully agreed.
post #20 of 146
Quote:
Originally Posted by Stay Puft View Post

290 is not 30% faster then a 7970. More like 15-20 and I just used the graph to show that different PCI speeds don't hamper cards as much as people think they do
22% but 7970ghz vs a oced r9 290 to higher frecuency(125mhz+) could be 30% +/-
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