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So Will Crossfire work as well as I want it?

post #1 of 6
Thread Starter 
alright so my board is a GIGABYTE GA-P67A-UD7-B3 it has Support for 2-Way/3-Way ATI CrossFireXâ„¢/NVIDIA SLI technology. Heres the problem.

My processor Intel® Core™ i5-2500K Processor (6M Cache, 3.30 GHz) according to the intel site the processor has Expansion Options. It has PCI Express Revision 2.0 and the number of PCI Express Ports is 1.


yet Microcenter.com says it supports PCI Express Revision 2.0, however it supports PCI Express Configurations 1x16, 2x8 and it supports 1 PCI Express Port.

Heres the problem. My mobo supports

1. 2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots.

2. 2 x PCI Express x16 slots, running at x8 (PCIEX8_1, PCIEX8_2)
* The PCIEX8_1 slot shares bandwidth with the PCIEX16_1 slot and the PCIEX8_2 slot with PCIEX16_2. The PCIEX16_1/PCIEX16_2 slot will operate at up to x8 mode when the PCIEX8_1/PCIEX8_2 is populated.

3. 1 x PCI Express x1 slot
(All PCI Express slots conform to PCI Express 2.0 standard.)

4. 2 x PCI slots


Now can I run two crossfire/Sli crads at 16x 16x 0 0 with my processor or will i have to run it below it?

In essence, will my processor and mobo work with my goal to use crossfire/sli tech?
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First Beginnings
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CPUMotherboardGraphicsRAM
i5 3570k GA-P67A-UD7-B3 Gigabyte R9 270x G.SKILL Ripjaws X Series 1600mhz 
Hard DriveHard DriveCoolingOS
Crucial M4  Seagate Barracuda  Corsair H60 Windows 8.1 Professional 
MonitorMonitorKeyboardPower
Acer A231H 23" Acer M230A 23" LCD 1080p Razer Lycosa CORSAIR HX 850W 
CaseMouseAudio
AZZA Hurrican 2000 CSAZ-2000 Razer Lachesis Hercules XPS 5.1 70 Slim 
CPUMotherboardGraphicsRAM
I5 2500k Gigabyte P67X-UD3-B3 XFX 6870 GSkill DDR3-1333 
Hard DriveOptical DriveOSKeyboard
Seagate Barracuda  Samsung Blu-Ray Windows Home Server 2011 Logitech Wireless Combo MK260 
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Antec NEO ECO 520C 520W NZXT Source 210 ARCTIC F12 120mm (x5) 
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post #2 of 6
When using two cards the slots will go 8x 8x 1x (assuming you have three PCI-ex16 slots).

You will not notice any performance decrease by this, and yes your motherboard is compatible with SLI/Crossifre.
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post #3 of 6
It just means that when you are using 2 GPU's that the lanes will be broken down into 8x, 8x lanes as sandy bridge only has 1 X16 lane (so it has to split it, or use a NF200 controller to double the signal)
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post #4 of 6
What these guys sad. Since Sandy Bridge isn't an enthusiast line it doesn't get full 16x support for multiple cards. Regardless, the difference might be at most a few fps, if it's even noticeable at all. I wouldn't worry too much about it.
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post #5 of 6
Sandy Bridge 8x/8x performs as well (or better) than X58 16x/16x. So dont worry about it.
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post #6 of 6
Thread Starter 
Thank you guys very much.
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CPUMotherboardGraphicsRAM
i5 3570k GA-P67A-UD7-B3 Gigabyte R9 270x G.SKILL Ripjaws X Series 1600mhz 
Hard DriveHard DriveCoolingOS
Crucial M4  Seagate Barracuda  Corsair H60 Windows 8.1 Professional 
MonitorMonitorKeyboardPower
Acer A231H 23" Acer M230A 23" LCD 1080p Razer Lycosa CORSAIR HX 850W 
CaseMouseAudio
AZZA Hurrican 2000 CSAZ-2000 Razer Lachesis Hercules XPS 5.1 70 Slim 
CPUMotherboardGraphicsRAM
I5 2500k Gigabyte P67X-UD3-B3 XFX 6870 GSkill DDR3-1333 
Hard DriveOptical DriveOSKeyboard
Seagate Barracuda  Samsung Blu-Ray Windows Home Server 2011 Logitech Wireless Combo MK260 
PowerCaseOther
Antec NEO ECO 520C 520W NZXT Source 210 ARCTIC F12 120mm (x5) 
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Reply
First Beginnings
(16 items)
 
Easy Storage
(11 items)
 
 
CPUMotherboardGraphicsRAM
i5 3570k GA-P67A-UD7-B3 Gigabyte R9 270x G.SKILL Ripjaws X Series 1600mhz 
Hard DriveHard DriveCoolingOS
Crucial M4  Seagate Barracuda  Corsair H60 Windows 8.1 Professional 
MonitorMonitorKeyboardPower
Acer A231H 23" Acer M230A 23" LCD 1080p Razer Lycosa CORSAIR HX 850W 
CaseMouseAudio
AZZA Hurrican 2000 CSAZ-2000 Razer Lachesis Hercules XPS 5.1 70 Slim 
CPUMotherboardGraphicsRAM
I5 2500k Gigabyte P67X-UD3-B3 XFX 6870 GSkill DDR3-1333 
Hard DriveOptical DriveOSKeyboard
Seagate Barracuda  Samsung Blu-Ray Windows Home Server 2011 Logitech Wireless Combo MK260 
PowerCaseOther
Antec NEO ECO 520C 520W NZXT Source 210 ARCTIC F12 120mm (x5) 
  hide details  
Reply
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