Must Read Tweaktown Article if you plan on doing 48xx in Crossfire

Ragheed · Jun 19, 2008, 06:24 PM

It seems like more than a few people are interested in getting two 4850 or 4870 cards now that they've (more or less) lived up to the hype.

But Tweaktown just posted an article comparing Crossfire on a Gigabyte P45 vs. X48 board, and the x8/x8 configuration can be severely handicapped at high settings.

Glad I decided to buy a Maximus Formula.

Only question now is, how much of a performance boost will the 4870 bring?

oli_ramsay · Jun 19, 2008, 06:29 PM

Interesting. Am I right in thinking that P45 with 2x8 PCI-e 2.0 is the same bandwidth as x38 PCI-e 1.1 2x16? If so, a new motherboard might be on the horizon.

erocker · Jun 19, 2008, 06:35 PM

Quote:

Originally Posted by oli_ramsay

Interesting. Am I right in thinking that P45 with 2x8 PCI-e 2.0 is the same bandwidth as x38 PCI-e 1.1 2x16? If so, a new motherboard might be on the horizon.

No, I don't believe there are any x38/x48 boards that aren't pci-e2.0.

Ragheed · Jun 19, 2008, 06:36 PM

Quote:

Originally Posted by oli_ramsay

Interesting. Am I right in thinking that P45 with 2x8 PCI-e 2.0 is the same bandwidth as x38 PCI-e 1.1 2x16? If so, a new motherboard might be on the horizon.

The X38 supports PCI-E 2.0.

oli_ramsay · Jun 19, 2008, 06:45 PM

ohh, thanks

newtekie1 · Jun 19, 2008, 06:46 PM

Very interesting article. I was contemplating getting a P45 motherboard, but now I will definitely go with a X48.

Ragheed · Jun 19, 2008, 06:54 PM

X38 would do the job, too, if you want to save some money. There's a decent number of them floating around on the forums.

erocker · Jun 19, 2008, 07:00 PM

Yes, there is one on this forum as a matter of fact! It can easily be made into a X48 too!

newtekie1 · Jun 19, 2008, 07:13 PM

Quote:

Originally Posted by erocker

Yes, there is one on this forum as a matter of fact! It can easily be made into a X48 too!

I just found your FS thread right before reading this.

It is tempting, but I need to sell my 780i board first.

CY:G · Jun 19, 2008, 07:15 PM

Guys, any reports about crossfiring 48x0 cards with 38x0 cards????

newtekie1 · Jun 19, 2008, 07:27 PM

Quote:

Originally Posted by CY:G

Guys, any reports about crossfiring 48x0 cards with 38x0 cards????

http://forums.techpowerup.com/showthread.php?t=63339

Jun 19, 2008, 07:31 PM

i'm so glad that i didn't wait for p45 when it was delayed, and went with x38.

CY:G · Jun 19, 2008, 07:32 PM

Quote:

Originally Posted by newtekie1

http://forums.techpowerup.com/showthread.php?t=63339

THank you good sir

Ragheed · Jun 23, 2008, 05:54 PM

Fudzilla correction about 38xx in Crossfire with 480xx:
http://www.fudzilla.com/index.php?op...=8075&Itemid=1

Jun 19, 2008, 06:24 PM	#1
Ragheed Join Date: Mar 2008 Location: Michigan, USA Posts: 17 (0.01/day) Thanks: 3 Thanked 6 Times in 3 Posts	Must Read Tweaktown Article if you plan on doing 48xx in Crossfire It seems like more than a few people are interested in getting two 4850 or 4870 cards now that they've (more or less) lived up to the hype. But Tweaktown just posted an article comparing Crossfire on a Gigabyte P45 vs. X48 board, and the x8/x8 configuration can be severely handicapped at high settings. Glad I decided to buy a Maximus Formula. Only question now is, how much of a performance boost will the 4870 bring?

System Name:	The Masturbation Station
Processor:	3770K
Motherboard:	Gigabyte Z77 UD5H
Cooling:	NH-D14
Memory:	8GB DDR 3 Samsung Green (MV-3V4G3D/US)
Video Card:	Powercolor 7970 V3
Hard Disk:	Crucial M4 128 Gb + 5TB
Optical Drive:	Pioneer DVD-RW
CRT/LCD Model:	Dell U2412M
Case:	Fractal Design Define R3
Sound Card:	Asus Xonar DS
PSU:	Corsair HX 620W
Software:	Windows 7 x64 Ultimate

Processor:	Intel i7 3770K @ 4.6ghz 1.256v
Motherboard:	Asus Maximus V Formula
Cooling:	Water
Memory:	2x4gb Patriot Viper 2133mhz 10-11-10-25 2T 1.55v
Video Card:	Sapphire HD 7970 1125/1575 1.14v
Hard Disk:	Crucial M4 128Gb / Corsair Force 3 120Gb / Samsung 240Gb / 2Tb Seagate
Optical Drive:	None
CRT/LCD Model:	Acheiva Shimian 27" IPS 2560x1440
Case:	Corsair 500R White
Sound Card:	Onboard
PSU:	NZXT Hale90 1Kw
Software:	Windows 8 x64

System Name:	The Masturbation Station
Processor:	3770K
Motherboard:	Gigabyte Z77 UD5H
Cooling:	NH-D14
Memory:	8GB DDR 3 Samsung Green (MV-3V4G3D/US)
Video Card:	Powercolor 7970 V3
Hard Disk:	Crucial M4 128 Gb + 5TB
Optical Drive:	Pioneer DVD-RW
CRT/LCD Model:	Dell U2412M
Case:	Fractal Design Define R3
Sound Card:	Asus Xonar DS
PSU:	Corsair HX 620W
Software:	Windows 7 x64 Ultimate

Jun 19, 2008, 06:46 PM	#6
newtekie1 Semi-Retired Folder Join Date: Nov 2005 Location: Indiana Posts: 17,747 (6.48/day) Thanks: 780 Thanked 5,115 Times in 3,706 Posts System Specs	Very interesting article. I was contemplating getting a P45 motherboard, but now I will definitely go with a X48. __________________ Rig1: System Specs. Rig2: A8-5600K@4.4GHz / AsRock FM2A75 Pro4 / 8GB Corsair DDR3-1600 9-9-9-24 / HD7560D / Samsung DVD-Burner / 1.5TB WD Green + 3x3TB WD RED in RAID5 Rig3: Athlon X2 4200+ / M4A79 Deluxe / 4GB G.Skill Pi DDR2-800 4-4-4-12 / GT430 / Sony DVD-Burner / 500GB WD Rig4: Phenom II x6 1605T @ 3.6GHz / Asus M5A99X Evo / 8GB PNY DDR3-1600 9-9-9 / GTX470 & GTX470 / Samsung DVD-Burner / 1.5TB Seagate

Jun 19, 2008, 06:29 PM	#2
oli_ramsay Join Date: Sep 2007 Location: UK Posts: 2,679 (1.29/day) Thanks: 577 Thanked 592 Times in 450 Posts System Specs	Interesting. Am I right in thinking that P45 with 2x8 PCI-e 2.0 is the same bandwidth as x38 PCI-e 1.1 2x16? If so, a new motherboard might be on the horizon.

Jun 19, 2008, 06:45 PM	#5
oli_ramsay Join Date: Sep 2007 Location: UK Posts: 2,679 (1.29/day) Thanks: 577 Thanked 592 Times in 450 Posts System Specs	ohh, thanks

Processor:	Intel Core i7 875K@4.0GHz(200x20)
Motherboard:	eVGA P55 FTW 200
Cooling:	Thermalright Ultra-120 Extreme w/ Corsair SP120 High Performance Edition
Memory:	8GB Corsair DDR3-1600 7-7-7-20
Video Card:	ASUS GTX 670 4GB DirectCU II @ 1015/3600
Hard Disk:	1TB Seagate 7200.12(OS), 3x 1.5TB Seagate 7200.11 in RAID 5
Optical Drive:	Lite-On Blu-Ray Combo Drive IHES108
CRT/LCD Model:	HP 25" 2509m 1080p LCD
Case:	Lian-Li Lancool Metal Boned K7 w/ Windowed Side Panel
Sound Card:	Onboard is good enough for me
PSU:	Corsair HX850
Software:	Windows 7 x64 Professional

Jun 19, 2008, 06:54 PM	#7
Ragheed Join Date: Mar 2008 Location: Michigan, USA Posts: 17 (0.01/day) Thanks: 3 Thanked 6 Times in 3 Posts	X38 would do the job, too, if you want to save some money. There's a decent number of them floating around on the forums.

Jun 19, 2008, 07:00 PM	#8
erocker Senior Moderator Join Date: Jul 2006 Location: Milwaukee, WI. Posts: 31,912 (12.77/day) Thanks: 2,783 Thanked 12,275 Times in 7,814 Posts System Specs	Yes, there is one on this forum as a matter of fact! It can easily be made into a X48 too!

Jun 19, 2008, 07:15 PM	#10
CY:G Join Date: Jan 2006 Posts: 160 (0.06/day) Thanks: 23 Thanked 13 Times in 11 Posts System Specs	Guys, any reports about crossfiring 48x0 cards with 38x0 cards????

System Name:	CYGNUS X4
Processor:	Intel i7 2600k @ 3.6Ghz
Motherboard:	Asus p8p67Pro
Cooling:	ThermalRight Ultra 120 Extreme
Memory:	2 * 4GB DDR 3 1600MHz = 8GB
Video Card:	2 * 6950 2GB In Crossfire and a 3870
Hard Disk:	2 * 640 GB WD AAKS in RAID 0
CRT/LCD Model:	4 * 24" Dell LCDs
Case:	Cooler Master Cosmos
PSU:	Corsair HX650

Jun 19, 2008, 07:31 PM	#12
wolf2009 Guest Posts: n/a (0/day)	i'm so glad that i didn't wait for p45 when it was delayed, and went with x38.

Jun 23, 2008, 05:54 PM	#14
Ragheed Join Date: Mar 2008 Location: Michigan, USA Posts: 17 (0.01/day) Thanks: 3 Thanked 6 Times in 3 Posts	Fudzilla correction about 38xx in Crossfire with 480xx: http://www.fudzilla.com/index.php?op...=8075&Itemid=1

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