Below are the Motherboards that Support 4-Way SLI. What X99 Board would you recommend. Thank You.
Primary CPU: Intel® Core™ i7-5960X Processor Extreme Edition (20M Cache, up to 3.50 GHz)
Alternant CPU: Intel® Xeon® Processor E5-2680 v3 (30M Cache, 2.50 GHz) * I know that the EVGA MB dose not support this CPU, Yet!
EVGA X99 Classified P/N: 151-HE-E999-KR
ASUS RAMPAGE V EXTREME, Extended ATX x99 Motherboard , LGA 2011-V3 Socket, DDR4 3300Mhz+(OC)
ASUS X99-E WS LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.0 CEB Form Factor Intel Motherboard
Gigabyte Intel LGA 2011-3 X99 4way SLI/CrossFireX Gaming Killer LAN Motherboards GA-X99-GAMING 5
Gigabyte Intel LGA 2011-3 X99 4way SLI/CrossFireX 4 DIMMs ATX Motherboards GA-X99-UD3
Gigabyte Intel LGA 2011-3 X99 4way SLI/CrossFireX WIFI Dual LAN Motherboards GA-X99-UD5 WIFI
Gigabyte Intel LGA 2011-3 X99 4way SLI/CrossFireX ATX Motherboards GA-X99-UD4
 
EVGA X99 Classified P/N: 151-HE-E999-KR
http://www.evga.com/Products/Product.aspx?pn=151-HE-E999-KR
ASUS RAMPAGE V EXTREME, Extended ATX x99 Motherboard , LGA 2011-V3 Socket, DDR4 3300Mhz+(OC)
http://www.asus.com/Motherboards/RAMPAGE_V_EXTREME
EK-FB KIT ASUS R5E - Acetal+Nickel [3831109821282]
ASUS X99-E WS LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.0 CEB Form Factor Intel Motherboard
http://www.asus.com/Motherboards/X99E_WS
 
 

Sajin
ASUS X99-E WS

Yes, The only Motherboard that Supports PCIe Speed x16 | x16 | x16 | x16 for all 4 Cards. This is why I am leaning this way ATM.

schmorblatz
An other board that supports 4 way SLI at x16/x16/x16/x16 is the Asus P9X79-E WS
 
But the X99-E WS seems to be far better !

It needs to be an X99 Chip Set, I have to many x79 Rigs.
Looking for newer Tech as well.
But Thanks. Cost May Have A Factor.

I'd still go for the ASUS X99-E WS even if I had to RMA it 10 times before I got a working board.

seta8967

bcavnaugh
I spent the last Two days reviewing the ASUS X99-E WS and found that only 1 out of 10 have a working MB.
So the ASUS X99-E WS off the Table so to speak.

Was it a hardware or software issue or just doa?

 
All, Bios, Memory, Drivers, DOA, Bad Memory Slots, Bad Memory, PCIe Slot 1 Problems.
Melting Parts, User Errors as well. What you would expect from a new board is what I believe.
Bent CPU Pins, but this is hard to really believe. This one came over from Newegg.
The best reviews are from users that do not even own one. Sad if you ask me.
Still Reviewing, The EVGA X99 Classified is looking Better and Better Every Day.
 
Still waiting for you to update this bad boy.

bcavnaugh

seta8967

bcavnaugh
I spent the last Two days reviewing the ASUS X99-E WS and found that only 1 out of 10 have a working MB.
So the ASUS X99-E WS off the Table so to speak.

Was it a hardware or software issue or just doa?

 
All, Bios, Memory, Drivers, DOA, Bad Memory Slots, Bad Memory, PCIe Slot 1 Problems.
Melting Parts, User Errors as well. What you would expect from a new board is what I believe.
Bent CPU Pins, but this is hard to really believe. This one came over from Newegg.
The best reviews are from users that do not even own one. Sad if you ask me.
Still Reviewing, The EVGA X99 Classified is looking Better and Better Every Day.
 
Still waiting for you to update this bad boy.

 
Updated, still waiting on the 980ti's. If the 980's had more than 4gb of VRAM I would have jumped on board. But 4k Star Citizen demands more!
 
I am not good with signatures...

Sajin
I'd still go for the ASUS X99-E WS even if I had to RMA it 10 times before I got a working board.

I will keep it in the Fold for now. Thanks

The best board for 4 way x16 SLI is the AsRock X99 Extreme11, I am pretty disappointed that MSI just put out a New Godlike Carbon board and still no x16x4 ****?

bcavnaugh

Tashmire
The best board for 4 way x16 SLI is the AsRock X99 Extreme11, I am pretty disappointed that MSI just put out a New Godlike Carbon board and still no x16x4 ****?

You will not find any Desktop Motherboard that will run 4 x x16 for Graphics Cards.

Both the ASUS X99-E WS & AsRock X99 Extreme11 can do 4-way sli @ x16 on each card. Both motherboards also use a plx chip to obtain the 4-way sli @ x16 on each card which adds a bit of latency. The AsRock X99 Extreme11 is available on newegg right now.

asrock extreme 11 x99  http://www.asrock.com/mb/Intel/X99%20Extreme11/
will be my next one . 

X99 Extreme11

The most extreme X99 motherboard with 8 SAS3 connectors
 
 



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18 x SATA3 (8 x SAS3 12.0 Gb/s + 10 x SATA3 6.0 Gb/s) from LSI SAS 3008 Controller

4-Way SLI™ & 4-Way CrossFireX™ (x16) supported by 2 embedded PLX 8747 bridges

ASRock Super Alloy
- XXL Aluminum Alloy Heatsink
- Premium 60A Power Choke
- Premium Memory Alloy Choke
- Ultra Dual-N MOSFET (UDM)
- Nichicon 12K Platinum Caps
- Sapphire Black PCB

Supports Intel^® Core™ i7 and Xeon^® 18-Core Processors Family for the LGA 2011-3 Socket

Digi Power, 12 Power Phase design

Supports Quad Channel DDR4 3200+(OC), with maximum capacity up to 128GB

Supports DDR4 UDIMM ECC*, RDIMM Memory (*ECC is supported with Intel^® Xeon^® processors.)

5 PCIe 3.0 x16, 2 embedded PLX PEX 8747

7.1 CH HD Audio with Content Protection (Realtek ALC1150 Audio Codec), Supports Purity Sound™ 2 & DTS Connect

Intel^® Dual Gigabit LAN with Teaming Function

10 SATA3, 8 SAS3, 2 eSATA, 2 Ultra M.2 (PCIe Gen3 x4 & SATA3)

8 USB 3.0 (4 Front, 4 Rear), 8 USB 2.0 (4 Front, 4 Rear)

1 COM Port Header

I am waiting for the next generation to come out, fixed income really hurts when you want to play on the High End. 

I will never have another asus mb again. so if I do go evga it will be asrock for me . I think next build will be asrock and 8/way pascal .  may not be spelling it right lol.