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P5KE-WiFI/AP : crossfire options and impact?

post #1 of 5
Thread Starter 
I've been searching for a while but can't seem to find what I'm looking for: I'd like to know what kind of crossfire support comes wtih my motherboard. I figured it's x16/x4 but I'm kinda new to this. Would it be possible to do x8/x8 on my board? What kind of impact on performance am I to expect by using 2x 3870 or 4870 + 3870 on my current motherboard?

Thanks for the help!
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The Mark I
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post #2 of 5
Quote:
Originally Posted by switch.dota View Post
I've been searching for a while but can't seem to find what I'm looking for: I'd like to know what kind of crossfire support comes wtih my motherboard. I figured it's x16/x4 but I'm kinda new to this. Would it be possible to do x8/x8 on my board? What kind of impact on performance am I to expect by using 2x 3870 or 4870 + 3870 on my current motherboard?

Thanks for the help!
x16 x4

With a high end CF you will see a substantial drop in performance.
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post #3 of 5
It's 16x/4x like grunion said. The HD4850 is already bottlenecked by the PCI-e 16x slots, so I'm fairly sure a CF setup with HD48's would be a poor choice.

You can't do crossfire with a HD4850 and an HD3870, myself and another member (with the same board as us) tried and got BSODs.

Adding a second HD3870 would also not be a good idea, as you get roughly twice the frame rate with an HD4850 over a HD3870.

So in short, your best bet is to sell the HD3870 and buy a HD4850/70.
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post #4 of 5
Quote:
Originally Posted by Mootsfox View Post
It's 16x/4x like grunion said. The HD4850 is already bottlenecked by the PCI-e 16x slots, so I'm fairly sure a CF setup with HD48's would be a poor choice.

You can't do crossfire with a HD4850 and an HD3870, myself and another member (with the same board as us) tried and got BSODs.

Adding a second HD3870 would also not be a good idea, as you get roughly twice the frame rate with an HD4850 over a HD3870.

So in short, your best bet is to sell the HD3870 and buy a HD4850/70.
I cried
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Mighty-iTX
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Cooler Master Glacer 7 Ultimate 64 SyncMaster Eclipse 
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XFX 1050 BE 600T Silver MX518 Desk 
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post #5 of 5
Thread Starter 
Thanks for the info. Unfortunately my budget for video cards has been spent last month already. I was kinda hoping to do 3870 + 4870 At least as a measure of protecting my 3870 investment.
Edited by switch.dota - 6/25/08 at 2:12am
The Mark I
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CPUMotherboardGraphicsRAM
Intel E6750 Asus P5K-E/WiFi AP HIS HD3870 2x1GB Corsair 800mhz/c4 
RAMHard DriveHard DriveHard Drive
2x2GB Mushkin 1000mhz/c5 WD2500YS WD5000EX WD5000AX 
Optical DriveCoolingOSMonitor
Asus DVD/DL-RW Scythe Ninja+ rev B w/ Scythe GlideStream 2kRPM Windows 7 x64 20' LCD 
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Logitech Keyboard Akasa Power+ iQ 650W Antec P-182 Gigabyte M6580 
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my ancient desk ;) on-board 
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The Mark I
(18 items)
 
  
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RAMHard DriveHard DriveHard Drive
2x2GB Mushkin 1000mhz/c5 WD2500YS WD5000EX WD5000AX 
Optical DriveCoolingOSMonitor
Asus DVD/DL-RW Scythe Ninja+ rev B w/ Scythe GlideStream 2kRPM Windows 7 x64 20' LCD 
KeyboardPowerCaseMouse
Logitech Keyboard Akasa Power+ iQ 650W Antec P-182 Gigabyte M6580 
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my ancient desk ;) on-board 
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