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Will my system bottleneck if i add a second HD6870 for Crossfire?

post #1 of 8
Thread Starter 
Hey guys..fast question...Will my system bottleneck if i add a second HD6870 for Crossfire? Check my system in the signature..
Alienware 17
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Intel Core i7 4700MQ NVidia Geforce GTX 770M Samsung 840 Evo Windows 8.1 x64 
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Intel Core 2 Quad Q9550 Gigabyte EP45-UD3P Radeon HD 6870 Corsair Dominator 4GB 1066MHz 
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OCZ Vertex 2E 60GB Seagate Barracuda 500GB Seagate Barracuda 500GB XSPC Raystorm 
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Alienware 17
(5 items)
 
Sacred Moon
(18 items)
 
 
CPUGraphicsHard DriveOS
Intel Core i7 4700MQ NVidia Geforce GTX 770M Samsung 840 Evo Windows 8.1 x64 
Mouse
Steelseries Rival 
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q9550 Gigabyte EP45-UD3P Radeon HD 6870 Corsair Dominator 4GB 1066MHz 
Hard DriveHard DriveHard DriveCooling
OCZ Vertex 2E 60GB Seagate Barracuda 500GB Seagate Barracuda 500GB XSPC Raystorm 
CoolingCoolingOSMonitor
Black Ice GTX480 Dual Laing DDC-1T w/ EK Dual Top Windows 7 Ultimate 64-bit Samsung T220HD 
KeyboardPowerCaseMouse
Logitech G15 Silverstone Strider Plus ST75F-P 750W Coolermaster CM 690 II Advanced (Modded) Razer Mamba 
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Roccat Sense 
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post #2 of 8
Nice looking rig!
With a Q9550 I really don't think so
two 7970 maybe but not 2 6870

Regards,
post #3 of 8
If so it would be small, but I'd say your ok. Anything futher, the bigger I think it would get. Are you at stk speeds?
post #4 of 8
Nah, you'll be fine.

Nice 775 BTW, have you hit 4GHz?
 
POS
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Dell Vostro 3300
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Intel i5 2500k @ 4.8GHz 1.28v 24/7 MSI P67A-GD55 PowerColor Radeon 7870 PCS+ 1350/1550MHz 24/7 Crucial 12GB 8-8-8-22 
Hard DriveOptical DriveCoolingOS
WD Scorpio Black 2.5" RAID 0 (1000GB) LG DVD-RW DL Dwood Windows 7 Professional 64-Bit 
MonitorKeyboardPowerCase
Samsung S23A700D 120Hz Microsoft Sidewinder X4 OCZ ModXStreamPro 700 Watt Corsiar 400R 
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RAT 3 Wooden Desk On-board 7.1 Surround 
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Pentium 4 1.9Ghz Trigem Cupertino Geforce 2 MX400 @ 185MHZ 512MB DDR @ 133MHz 
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40Gb @ 17Mb/s 2x DVD Burner Windows XP Home Edition x86 16" CRT 
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OEM 300 Watt OEM OEM 
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520m 2.4GHz Dell 05JR09 310m (GT218m) 4Gb DDR3 
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POS
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Dell Vostro 3300
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Intel i5 2500k @ 4.8GHz 1.28v 24/7 MSI P67A-GD55 PowerColor Radeon 7870 PCS+ 1350/1550MHz 24/7 Crucial 12GB 8-8-8-22 
Hard DriveOptical DriveCoolingOS
WD Scorpio Black 2.5" RAID 0 (1000GB) LG DVD-RW DL Dwood Windows 7 Professional 64-Bit 
MonitorKeyboardPowerCase
Samsung S23A700D 120Hz Microsoft Sidewinder X4 OCZ ModXStreamPro 700 Watt Corsiar 400R 
MouseMouse PadAudio
RAT 3 Wooden Desk On-board 7.1 Surround 
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Pentium 4 1.9Ghz Trigem Cupertino Geforce 2 MX400 @ 185MHZ 512MB DDR @ 133MHz 
Hard DriveOptical DriveOSMonitor
40Gb @ 17Mb/s 2x DVD Burner Windows XP Home Edition x86 16" CRT 
KeyboardPowerCaseMouse
OEM 300 Watt OEM OEM 
CPUMotherboardGraphicsRAM
520m 2.4GHz Dell 05JR09 310m (GT218m) 4Gb DDR3 
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post #5 of 8
Thread Starter 
Thanks for the nice comments guys..i just got my Q9550 so i havent tried on overclocking it..planing to do it by tommorow..how much vcore do u think i should feed it?
Alienware 17
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Sacred Moon
(18 items)
 
 
CPUGraphicsHard DriveOS
Intel Core i7 4700MQ NVidia Geforce GTX 770M Samsung 840 Evo Windows 8.1 x64 
Mouse
Steelseries Rival 
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q9550 Gigabyte EP45-UD3P Radeon HD 6870 Corsair Dominator 4GB 1066MHz 
Hard DriveHard DriveHard DriveCooling
OCZ Vertex 2E 60GB Seagate Barracuda 500GB Seagate Barracuda 500GB XSPC Raystorm 
CoolingCoolingOSMonitor
Black Ice GTX480 Dual Laing DDC-1T w/ EK Dual Top Windows 7 Ultimate 64-bit Samsung T220HD 
KeyboardPowerCaseMouse
Logitech G15 Silverstone Strider Plus ST75F-P 750W Coolermaster CM 690 II Advanced (Modded) Razer Mamba 
Mouse Pad
Roccat Sense 
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Reply
Alienware 17
(5 items)
 
Sacred Moon
(18 items)
 
 
CPUGraphicsHard DriveOS
Intel Core i7 4700MQ NVidia Geforce GTX 770M Samsung 840 Evo Windows 8.1 x64 
Mouse
Steelseries Rival 
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q9550 Gigabyte EP45-UD3P Radeon HD 6870 Corsair Dominator 4GB 1066MHz 
Hard DriveHard DriveHard DriveCooling
OCZ Vertex 2E 60GB Seagate Barracuda 500GB Seagate Barracuda 500GB XSPC Raystorm 
CoolingCoolingOSMonitor
Black Ice GTX480 Dual Laing DDC-1T w/ EK Dual Top Windows 7 Ultimate 64-bit Samsung T220HD 
KeyboardPowerCaseMouse
Logitech G15 Silverstone Strider Plus ST75F-P 750W Coolermaster CM 690 II Advanced (Modded) Razer Mamba 
Mouse Pad
Roccat Sense 
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Reply
post #6 of 8
whatever keeps it stable:thumb:
post #7 of 8
It won't.
But who cares if it bottleneck if it render the 60fps you need to cap your monitor? Worry about bottleneck if you have a 120Hz monitor or eyefinity or a very bad cpu otherwise don't even ask...
post #8 of 8
Well my 1100t runs at %60-%70 load when running the cf 6870's. Also my 2500k at @5.1Ghz would still hit the %70 load range at peak with the 6870's. So you be the judge of it.
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4930k @ 4.5ghz HT  Sabertooth X79 2x Asus DirectCU 7970 @ 1200/1600 16gb Gskill 2400 @ 10-12-11-30  
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2xCorsair Gt 120gb Raid 0 Samsung SSD 850 EVO 250GB 2tb HDD (2x1tb [ Raid 0 ]64mb cache) 500gb HDD 
CoolingCoolingCoolingCooling
Custom Watercooling Loop XSPC 750 XSPC Raystorm Alphacool WHITE 360mm Monsta 
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7 x Artic F12 Case Fans Custom Sleeved in White... Win10 64bit 3 x 21.5in Led 1080p Eyefinity Corsair K90  
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750 Evo Blue Haf 932 Func MS3^2 Ikari Laser & Rat 7 & Deathadder & L... Func XL 
CPUMotherboardGraphicsRAM
Amd 8350 @ 4.5 stock voltage MSI 890GXM-gd65 Asus DCII GTX 660 16gb Gskill DDR3 1600@ 8-8-8-24 
Hard DriveOptical DriveCoolingCooling
120GB revo drive None Sycthe Big Shuriken 2 Modded Titan TTC-HDC4 HDD 
OSPowerCase
Window 7 64bit  750w Evo Blue Modular PSU White Silverstone Sugo sg02 
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Blue
(20 items)
 
Dirty 6
(11 items)
 
 
CPUMotherboardGraphicsRAM
4930k @ 4.5ghz HT  Sabertooth X79 2x Asus DirectCU 7970 @ 1200/1600 16gb Gskill 2400 @ 10-12-11-30  
Hard DriveHard DriveOptical DriveOptical Drive
2xCorsair Gt 120gb Raid 0 Samsung SSD 850 EVO 250GB 2tb HDD (2x1tb [ Raid 0 ]64mb cache) 500gb HDD 
CoolingCoolingCoolingCooling
Custom Watercooling Loop XSPC 750 XSPC Raystorm Alphacool WHITE 360mm Monsta 
CoolingOSMonitorKeyboard
7 x Artic F12 Case Fans Custom Sleeved in White... Win10 64bit 3 x 21.5in Led 1080p Eyefinity Corsair K90  
PowerCaseMouseMouse Pad
750 Evo Blue Haf 932 Func MS3^2 Ikari Laser & Rat 7 & Deathadder & L... Func XL 
CPUMotherboardGraphicsRAM
Amd 8350 @ 4.5 stock voltage MSI 890GXM-gd65 Asus DCII GTX 660 16gb Gskill DDR3 1600@ 8-8-8-24 
Hard DriveOptical DriveCoolingCooling
120GB revo drive None Sycthe Big Shuriken 2 Modded Titan TTC-HDC4 HDD 
OSPowerCase
Window 7 64bit  750w Evo Blue Modular PSU White Silverstone Sugo sg02 
  hide details  
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