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post #24591 of 24922
im working with 40 pcie lanes. cant uses 4 way sli. Im not able to run 16 16 16 even with 3 way sli
post #24592 of 24922
quad x16 would be nice - although not 100% sure it works like that in the real world although bios reports it like this

tri-sli without the expander i get x16 x8 x8 and quite a performance hit in benchmarks
 
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post #24593 of 24922
Quote:
Originally Posted by bbowseroctacore View Post

quad x16 would be nice - although not 100% sure it works like that in the real world although bios reports it like this

tri-sli without the expander i get x16 x8 x8 and quite a performance hit in benchmarks
I didnt think the hit would be that big. I have seen a few tests that show only a few % reduction in performance. Here is a pic from Puget Systems.
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post #24594 of 24922
going from tri-sli to quad-sli for benchmarking provides a big increase - however it does not affect gaming to a great degree. some games go a little backwards performance wise due to driver/game optimisation - not a real big issue as the quad setup is mainly for benching. i have quad-sli mars ii's in my gaming rig with win 10 driver only accepts 3-way sli+physx - this performs slightly better than 4-way sli in win7.
 
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asus dvd rw ek supreme hf ek fc580 dcii x4 ek fc780 dcii x3 
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ek crosshair v formula z windows 7 64bit home premium 32" 1080p hd tv laser 
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post #24595 of 24922
Quote:
Originally Posted by bbowseroctacore View Post

going from tri-sli to quad-sli for benchmarking provides a big increase - however it does not affect gaming to a great degree. some games go a little backwards performance wise due to driver/game optimisation - not a real big issue as the quad setup is mainly for benching. i have quad-sli mars ii's in my gaming rig with win 10 driver only accepts 3-way sli+physx - this performs slightly better than 4-way sli in win7.
I think I might have misunderstood. Were you saying the performance hit was from going to 3 way from 4 way sli and not from reduced pcie bandwidth.
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post #24596 of 24922
correct - maybe i should have worded it different. also the fourth card cannot be added to the mobo without the xpander - iirc due to the last lane running at x4 on the crosshair v formula. x8 vs x16 isnt a big deal gaming wise - quad x16 does add some points for benching.
 
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post #24597 of 24922
I need help!

I own a reference GTX 780 with an A3 custom skynet bios
Clocked at 1306Mhz and 7200Mhz on memory, 1.325v and 150% Power Limit
Where can I find a NEW BIOS with 200% power limit? My card is not B1

Thanks! (Sorry for my english)
post #24598 of 24922
Are you even hitting your power limit?
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post #24599 of 24922
thanx this bios fixed my issues on the gigabyte gtx 780 oc rev2.0 biggrin.gifbiggrin.gif
Edited by Vip3r011 - 2/23/16 at 8:29am
post #24600 of 24922
Hey guys new here, both to forum and over clocking in general.

started gaming at 2k so my 780 is now crying a bit so i thought i would overclock it, everything is fine till out of nowhere for a second my voltages goes from 1150 to 1000 and then back up

my system specs are:
Mother Board: Asus VII hero
CPU: I7 4790k @ 4.4 ghz
GPU: Gtx 780 SC ACX
PSU: EVGA SuperNOVA 1200 P2
Sound Card: Sound Baster Z

Im using MSI afterburner and curently have
core volt at 0
106% power limit with temp limit of 95c
core clock at 70
mem clock at 300

which works fine till the voltage spikes down and up randomly my temp while testing doesnt go above 65c


any help will be tremendously appreciated
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