Difference between 5770 100283VXL and 100283VXL-2L?

[Overheal]

OK so I just bought my 2nd 5770, planning on the crossfire (naturally)

First question: difference between the two cards? Physically I note they have the same cooler but the cards themselves look considerably different: different color (1 brown 1 green) and one is an inch longer than the other. In addition I notice on startup the shorter green one (cant tell them apart now ) - it's LED light flickers a little bit on bootup and is not as bright as the other. Don't think it's a power issue, both are on two sperate rails from a Corsair HX 750W.

Secondly when installing the 2nd card I noted (well it had happened for a while but I didnt give a **** previously) that CCC/AMDCC wont launch. The process kicks on for a second and then vanishes. Tried reinstalling all the C++ Redistributables, Tried Driver Sweeper, And I kept getting errors during the driver install attempts:

Catalyst™ Install Manager
Installation Report
12/01/11 23:25:53

Hardware information
Name	AMD Radeon Graphics Processor
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x68b8
Vendor ID	0x1002
Class Code	0x030000
Revision ID	0x00
Subsystem ID	0xd132
Subsystem vendor ID	0x174b
Other hardware
Existing packages
AMD USB Filter Driver
AMD APP SDK Runtime
The Lord of the Rings FREE Trial
HDMI/DP Audio Driver
Microsoft Visual C++ 2010 Redistributable
Communication Opt-in
AMD Drag and Drop Transcoding
AMD Media Foundation Decoders
Packages for install
Application Profiles
Final Status:	Success
Version of Item:	2.0.4331.36041
Size:	2 Mbytes
AMD Catalyst Install Manager
Final Status:	Success
Version of Item:	3.0.851.0
Size:	20 Mbytes
AMD Display Driver
Final Status:	Success
Version of Item:	8.911.0.0000
Size:	90 Mbytes
HDMI/DP Audio Driver
Final Status:	Success
Version of Item:	7.12.0.7702
Size:	1 Mbytes
AMD VISION Engine Control Center
Final Status:	Success
Version of Item:	2011.1025.2231.38573
Size:	150 Mbytes

Other detected devices
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x9601
Vendor ID	0x1022
Class Code	0x060000
Revision ID	0x00
Subsystem ID	0x9601
Subsystem vendor ID	0x1022
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x9603
Vendor ID	0x1022
Class Code	0x060400
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0xaa58
Vendor ID	0x1002
Class Code	0x040300
Revision ID	0x00
Subsystem ID	0xaa58
Subsystem vendor ID	0x174b
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x960b
Vendor ID	0x1022
Class Code	0x060400
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
AMD Radeon Graphics Processor
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x68b8
Vendor ID	0x1002
Class Code	0x030000
Revision ID	0x00
Subsystem ID	0x1482
Subsystem vendor ID	0x174b
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0xaa58
Vendor ID	0x1002
Class Code	0x040300
Revision ID	0x00
Subsystem ID	0xaa58
Subsystem vendor ID	0x174b
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x9604
Vendor ID	0x1022
Class Code	0x060400
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x9608
Vendor ID	0x1022
Class Code	0x060400
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x9609
Vendor ID	0x1022
Class Code	0x060400
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
ATI Integrated SATA Support
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x4390
Vendor ID	0x1002
Class Code	0x01018f
Revision ID	0x40
Subsystem ID	0x4390
Subsystem vendor ID	0x1002
ATI Integrated SMBus Support
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x4385
Vendor ID	0x1002
Class Code	0x0c0500
Revision ID	0x41
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
ATI Integrated SATA Support
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x439c
Vendor ID	0x1002
Class Code	0x01018a
Revision ID	0x40
Subsystem ID	0x439c
Subsystem vendor ID	0x1002
ATI Integrated Azalia Support
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x4383
Vendor ID	0x1002
Class Code	0x040300
Revision ID	0x40
Subsystem ID	0x8410
Subsystem vendor ID	0x1043
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x4384
Vendor ID	0x1002
Class Code	0x060401
Revision ID	0x40
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x43a0
Vendor ID	0x1002
Class Code	0x060400
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x1200
Vendor ID	0x1022
Class Code	0x060000
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x1201
Vendor ID	0x1022
Class Code	0x060000
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x1202
Vendor ID	0x1022
Class Code	0x060000
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x1203
Vendor ID	0x1022
Class Code	0x060000
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000
Manufacturer	Advanced Micro Devices, Inc.
Device ID	0x1204
Vendor ID	0x1022
Class Code	0x060000
Revision ID	0x00
Subsystem ID	0x0000
Subsystem vendor ID	0x0000

Error messages

At my wits end to the point where I have just decided to just blast it and reformat Windows which I am in the middle of. But of course now Im left here wondering, is there a key difference between the cards, will it affect crossfire?

Also this is my first Crossfire setup and would like to get pointed to some basics - ie. can you switch between Single and Dual card mode on the fly or does it require physical removal when you want to do it?

Thanks.

Edit: ASUS M4A89GTD PRO/USB3 AM3 1055T THUBAN PHENOM II X6 4GB DDR3 1333Mhz PCI-E x16 (2)* {2 cards x8 x8 or 1 card x16}

For 5770X2 is there a wrong way to attach the bridge? Should I use both bridge connectors or does it only use 1?

 

[ghost_recon88]

After googling around, I found this thread where the users say that one card is a reference card (and uses a reference cooler) and the other is a non-reference card. In lame-mans terms, one cards PCB was designed per AMDs official design, and the other was designed in-house by Sapphire.

Regarding your other questions, as far as I know you can just leave the Crossfire bridge connected between the two and disable Crossfire through the CCC if you want. You only need to use one bridge connector if you are only running two cards. You may want to try a clean Windows install and install the latest CCC right off the bat to test if your current configuration is giving you problems.

 

[Overheal]

Thanks thats what I ended up doing. I think at this point it was a combination of things. some people suggested it was having to reinstall c++/.net libraries but it was probably having AMD overdrive installed from ASUS's website; the new AMD CC includes OD as a subprogram so I wager they were in conflict. Either way it's working good now, and during the entire shpiel they put out the new CAP for Skyrim, so everyone wins.