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ASUS Rampage IV Extreme PCI-E 3.0 Support

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  • Asus
  • Support
  • Rampage
  • PCI Express
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April 24, 2012 9:28:51 AM

Quick question: will the ASUS Rampage IV Extreme X79 fully support PCI-E 3.0?
I might upgrade to a 3-SLI 680 configuration in the future.

Also, for PCI-E 3.0 will there be a difference between Ivy and Sandy-E? If yes, what will it be?

More about : asus rampage extreme pci support

a b V Motherboard
April 24, 2012 10:25:10 AM

Ivy bridge has PCIE 3.0 natively, whereas SB-E does not so you get a bit of performance boost.

yes it does have PCIE 3

"Expansion Slots, 4 x PCIe 3.0/2.0 x16 (x16; x16/x16; x16/x8/x16"-From ROG website.
April 24, 2012 10:41:49 AM

constepatdyak said:
Ivy bridge has PCIE 3.0 natively, whereas SB-E does not so you get a bit of performance boost.

yes it does have PCIE 3

"Expansion Slots, 4 x PCIe 3.0/2.0 x16 (x16; x16/x16; x16/x8/x16"-From ROG website.


How much is a bit?

Apologies, I've explained myself badly. I understand that it supports PCI-E 3.0.
My questions are:

1) will it take full advantage of it?
2) is it going to support PCI-E 3.0 32x?

Thanks for you answers!
Related resources
a b V Motherboard
April 24, 2012 10:48:54 AM

PCIE 3.0 16x is just like PCIE 2.0 32x, because pcie 3.0 is double the bandwidth of pcie 2.0. Yes it will take full advantages as long as you get an ivy bridge CPU, but to be honest the performance difference isnt that much and it's not worth it if it means u have to swap mobo/cpu.
April 24, 2012 11:20:30 AM

I'm actually trying to buld a future proof gaming rig, so I need to consider all upcoming innovations.

Will there be a PCI-E 32x?
a b V Motherboard
April 24, 2012 12:02:03 PM

Just off to say this...no such thing as a gaming rig. It it best to invest 1k-1.5k each 1-2 years, rather than to spend 4k-5k ect all in one big burst. But to answer your question....PCIE 3.0 is "32x"...compared to PCIE 2.0 16x
April 24, 2012 12:43:38 PM

constepatdyak said:
Just off to say this...no such thing as a gaming rig. It it best to invest 1k-1.5k each 1-2 years, rather than to spend 4k-5k ect all in one big burst. But to answer your question....PCIE 3.0 is "32x"...compared to PCIE 2.0 16x


Understood. I'm going to spend 2500£ on a new PC because at the moment I haven't got one. Was thinking about i7 3930k, 2 680 SLI, 16GB 1866MHZ on an ASUS Rampage IV Extreme.
April 24, 2012 12:50:24 PM

I'm still not clear on one thing. I understand that there are 2 versions of PCI-E 2.0. These should be 16x and 8x. How many version of PCI-E 3 will there be?
a b V Motherboard
April 24, 2012 12:54:41 PM

no point getting 6 core CPU. although you may feel good about buying the elite platform, they will actually not provide any benefits in gaming, so in essence you're throwing away 2-3 Cores and $300 bucks compared to an i5 2500k/3570k/i7 2600k/3770k

^PCIE will technically be 32x,16x, but it is still labeled as 16x,8x. Don't over think this, it'll be more confusing the more you think lol. PCIE 3.0=PCIE 2.0 doubled in bandwidth. So SLI 680 in PCIE 3.0 8x,8x will be equal to PCIE 2.0 16x,16x.
April 24, 2012 1:09:26 PM

So will my ASUS Rampage IV Extreme be able to support PCI-E 32x?
I get your point, but I was thinking to get a Socket 2011 GPU because the are many 2011 mobos out there with four PCI-E 3 slots.
I can find 1155 mobos with as many 16x PCI-E 3 slots.
a b V Motherboard
April 24, 2012 1:10:28 PM

Yes, yes yes it wil. As long as it support pcie 3.0...it supports "32x" lol. Mate, just think of 32x as exactly 16x.

The Asus rampage V extreme and Formula should be released soon, if you can't wait, get your X79 if you can, go for that.
April 24, 2012 1:14:20 PM

lol, sorry for driving you mad! When do you think the Asus rampage V Extreme will be out?
a b V Motherboard
April 24, 2012 1:15:11 PM

Haha mate, not mad at all :)  I reckon in 2 months or so, long way away tho. If you can;t wait, get the X79 :) 
a c 717 V Motherboard
a c 207 Ĉ ASUS
April 24, 2012 1:25:07 PM

Nic88 said:
Quick question: will the ASUS Rampage IV Extreme X79 fully support PCI-E 3.0?
I might upgrade to a 3-SLI 680 configuration in the future.

Also, for PCI-E 3.0 will there be a difference between Ivy and Sandy-E? If yes, what will it be?

The R4E is PCIe 3.0 compatible, the original SB-E spec (was) PCIe 3.0 (8 GT/s), the AMD 7000 series runs PCIe 3.0 on the SB-E, currently nVidia has disabled PCIe 3.0 on the SB-E -- BUT there are registry modifications where it will run PCIe 3.0.

The IB 16 lanes of PCIe 3.0 vs SB-E 32 lanes of PCIe 3.0 on AMD & 32 lanes of PCIe 2.0 on nVidia. AFAIK the IB 'should' be validated PCIe 3.0 by nVidia and I hope to see the same on SB-E since (see below) it clearly can run PCIe 3.0.

This is a copy/paste from another similar post I replied to:
The issues:
1. Most LGA 2011 have some sort of BIOS PCIe 3.0 update, requiring an update:
X79 Extreme9 (BIOS version 2.0 is the latest, but no ref to PCIe 3.0 update) - http://www.asrock.com/mb/download.asp?Model=X79%20Extre...
2. nVidia must validate PCIe 3.0 on SB-E. To date it's limited to PCIe 2.0:
"*GeForce GTX 680 supports PCI Express 3.0. The Intel X79/SNB-E PCI Express 2.0 platform is only currently supported up to 5GT/s (PCIE 2.0) bus speeds even though some motherboard manufacturers have enabled higher 8GT/s speeds."

The hack may or may not work...

Frankly, PCIe 2.0 vs PCIe 3.0 on today's GPU's does zip *, and with 2-WAY PCIe 2.0 x16/x16 on LGA 2011 is the same bandwidth as 2-WAY PCIe 3.0 x8/x8 on IB + LGA 1155 with GEN3 or Z77's. PCIe 3.0 becomes relevant once 4K Monitors became available to the 'Consumer' and in mass production, but by then it's going to be time to upgrade your PC & GPU(s).

PCIe 3.0 vs 2.0 - http://www.hardwarecanucks.com/forum/hardware-canucks-r...
* EXTREME PCIe 3.0 vs 2.0 - http://www.evga.com/forums/tm.aspx?m=1537816&mpage=1&pr...

Registry fix (hack) to force the GTX 680 to run in PCIe 3.0 mode; see - http://tinyurl.com/7awc9lv (RMPcieLinkSpeed, DWORD = 0004, etc).

The HD 7000 series does run in PCIe 3.0 mode on LGA 2011.

You may also want to read - http://www.techpowerup.com/162942/GeForce-GTX-680-Relea...
GeForce GTX 680 supports PCI Express 3.0. It operates properly within the SIG PCI Express Specification and has been validated on multiple upcoming PCI Express 3.0 platforms. Some motherboard manufacturers have released updated SBIOS to enable the Intel X79/SNB-E PCI Express 2.0 platform to run at up to 8GT/s bus speeds. NVIDIA is currently working to validate X79/SNB-E with GTX 680 at these speeds with the goal of enabling 8GT/s via a future software update. Until this validation is complete, the GTX 680 will operate at PCIE 2.0 speeds on X79/SNB-E-based motherboards with the latest web drivers.

Ivy Bridge and Z77 Chipset (Panther Point):


HD 7900 Series running PCIe 3.0 on SB-E:


GTX 600 Series running PCIe 3.0 on SB-E (fix applied):
a b V Motherboard
April 24, 2012 1:28:42 PM

^ Okay, that is just a perfect answer lol
a c 717 V Motherboard
a c 207 Ĉ ASUS
April 24, 2012 1:52:23 PM

Unfortunately, doesn't change the fact that nVidia is pissing me off. Most of my extreme client builds are off the SB-E/LGA 2011 platform. Since it's a PITA to get GTX 680's, and the 4GB GTX 680 isn't available (yet), I've been recommending the 3GB HD 7970.

I've asked Chris to run both a story on PCIe 3.0 vs PCIe 2.0 and to bring to light the nVidia GTX 680 disables PCIe 3.0 on SB-E. Sometimes you need to spotlight a problem to invoke change; good or bad it needs to be settled.
April 24, 2012 5:21:43 PM

So you are basically saying that eventually SB-E will support Nvidia PCI-E 3? Will it be as good as IB? In fact, for a 680 3-SLI gaming rig would you suggest IB or SB-E?
What is the difference in FPS between PCI-E 2 and 3 for a game like BF3?
Are there different kinds of PCI-E 3 (i.e.: 8x, 16x, 32x)?
I got the below from an ASUS mobo specs: would you be able to tell me the difference between the 2 PCI-E 3 "versions"?

2 x PCIe 3.0/2.0 x16 (dual x16) *1
1 x PCIe 3.0/2.0 x16 (x8 mode) *1

Would such a mobo suppport 3-SLI on PCI-E 3?
Sorry for the constant hammering and thank you for your patience.
a c 717 V Motherboard
a c 207 Ĉ ASUS
April 24, 2012 6:32:39 PM

3/4-WAY SLI GTX 680's IMO stick with the SB-E/LGA 2011. As posted see -> EXTREME PCIe 3.0 vs 2.0 - http://www.evga.com/forums/tm.aspx?m=1537816

The findings:
"Conclusion:

You won't need PCIe 3.0 at all unless you run 3 or 4 GTX680's and huge resolutions of multi monitor. At 2560x1600 or below and 2 GTX680's or less, PCIe 2.0 at 16x-16x on both cards will not bottleneck them AT ALL. "


Example:

April 24, 2012 7:24:02 PM

Last question: for 1080p would you advice IB or SB-E?
a c 717 V Motherboard
a c 207 Ĉ ASUS
April 24, 2012 7:51:20 PM

First, 3-WAY SLI of GTX 680's on a single (1080p) monitor is IMO absurd and a total waste i.e. Big-time Overkill.

Therefore, if the 'plan' is a single HD (1080p) monitor IB + (1) GTX 680 and no worries for quite some time.

Q - How many Monitors??
Q - Is 3D Vision part of the plan?
April 25, 2012 10:33:33 AM

Thanks for your assistance.

"First, 3-WAY SLI of GTX 680's on a single (1080p) monitor is IMO absurd and a total waste i.e. Big-time Overkill." - I totally get your point. I was thinking to play all games at Ultra, 1080p, 16x AF, 4x AA till 2014/2015 60+ FPS (I'm an AA maniac :p ).

"Therefore, if the 'plan' is a single HD (1080p) monitor IB + (1) GTX 680 and no worries for quite some time." - I already checked a lot of 680 GTX benchmarks, and I'm sure that I can't play BF3 at the above settings at 60 + FPS with one card.

"Q - How many Monitors??" - One at 1080p.

"Q - Is 3D Vision part of the plan?" - Nope.

Please advise and thanks again!








a c 717 V Motherboard
a c 207 Ĉ ASUS
April 25, 2012 11:48:06 AM

Huh?! Maybe you're looking at 2560x1600 resolution. IF you want 2-WAY or 3-WAY it's your money... ;) 
April 25, 2012 11:49:14 AM

Moreover, is a full speed PCI-E 3 3-SLI achievable with the below slots?

I got the below from an ASUS mobo specs: would you be able to tell me the difference between the 2 PCI-E 3 "versions"?

2 x PCIe 3.0/2.0 x16 (dual x16) *1
1 x PCIe 3.0/2.0 x16 (x8 mode) *1


a c 717 V Motherboard
a c 207 Ĉ ASUS
April 25, 2012 12:13:52 PM

Nic88 said:
Moreover, is a full speed PCI-E 3 3-SLI achievable with the below slots?

I got the below from an ASUS mobo specs: would you be able to tell me the difference between the 2 PCI-E 3 "versions"?

2 x PCIe 3.0/2.0 x16 (dual x16) *1
1 x PCIe 3.0/2.0 x16 (x8 mode) *1

Listen, most of the time I get accused of pushing too many GPU(s) or too high of a GPU class in this forum. I 'get' higher AA values and etc so get/buy whatever you want.

Regarding:
2 x PCIe 3.0/2.0 x16 (dual x16) *1
1 x PCIe 3.0/2.0 x16 (x8 mode) *1

*1 - I assume the '*1" is referencing some footnote on the spec page.

2 x PCIe 3.0/2.0 x16 (dual x16) - I am assuming this is an X79 spec, it means the PCIe caries full bandwidth of 16 PCIe lanes. If the BOTH the CPU and GPU is PCIe 3.0 compliant then you get effectively double the bandwidth of PCIe 2.0. There's no GPU out there that can saturate PCIe 2.0 x16 lanes.

1 x PCIe 3.0/2.0 x16 (x8 mode) - those are 'shared' PCIe slots to the PCIe 3.0/2.0 x16 slots, in other words: 1. shared slots never carry in this case the full x16 lanes, 2. In most cases once occupied PCIe 3.0/2.0 x16 + PCIe 3.0/2.0 x8 = both (shared) PCIe slots receive x8/x8 PCIe lanes of PCIe 2.0 or PCIe 3.0 depending upon the Lowest speed of either the CPU or GPU i.e. slowest wins.
April 25, 2012 2:01:28 PM

This is actually a Z77 ASUS Maximus V Gene.
So basically this mobo won't support 3-SLI at full speed PCI-E 3?
"I 'get' higher AA values and etc so get/buy whatever you want." - Apologies, I didn't get this sentence.


a c 717 V Motherboard
a c 207 Ĉ ASUS
April 25, 2012 2:16:53 PM

ASUS Maximus V GENE - http://www.asus.com/Motherboards/Intel_Socket_1155/Maxi...

No there's no 3-WAY anything on the ASUS Maximus V GENE Z77 it is a 2-WAY SLI/CF Z77 @ x8/x8 PCIe 2.0/3.0 depending on your CPU AND GPU(s). Also, it's an mATX MOBO not a full ATX or EATX so there's no way to (fit) more than (2) GPU's in greater than double width configuration.

The IB is perfect to 2-WAY GTX 680 support and after that it gets 'fuzzy' 3/4-WAY SLI is IMO best on the X79 platform with nVidia and clearly better for 3/4-WAY HD 7000 series; no 'hack' required.

If you want a IB + Z77 that offers up to 4-WAY SLI via PLX chip (aka 'splitter') then look at the ASUS P8Z77 WS - http://www.asus.com/Motherboards/Intel_Socket_1155/P8Z7... then remember you're funneling those GPU's bandwidth down to the equivalent PCIe 2.0 x8/x8/x8/x8 and potentially a tad of latency.

The following is NOT from ASUS Maximus V GENE:
2 x PCIe 3.0/2.0 x16 (dual x16) *1
1 x PCIe 3.0/2.0 x16 (x8 mode) *1

The following IS from ASUS Maximus V GENE:
2 x PCIe 3.0/2.0 x16 (x16 or dual x8, red) *2
1 x PCIe 2.0 x4 (black)
1 x mini-PCIe 2.0 x1 *3
April 25, 2012 2:50:45 PM

Well, that explains it. Thanks for your help mate.
One last question: what does "2 x PCIe 3.0/2.0 x16 (x16 or dual x8, red) *2" mean?
a c 717 V Motherboard
a c 207 Ĉ ASUS
April 25, 2012 3:08:59 PM

Regarding:
2 x PCIe 3.0/2.0 x16 (x16 or dual x8, red) *2

*2: PCIe 3.0 speed is supported by Intel® 3rd generation Core™ processors.

2 x PCIe 3.0/2.0 x16 (x16 or dual x8, red) - those are 'shared' PCIe slots to the PCIe 3.0/2.0 x16 slots, in other words: 1. shared slots never carry in this case the full x16 lanes (lower PCIe Slot), 2. once occupied PCIe 3.0/2.0 x16 + PCIe 3.0/2.0 x8 = both (shared) PCIe slots receive x8/x8 PCIe lanes of PCIe 2.0 or PCIe 3.0 depending upon the Lowest speed of either the CPU or GPU i.e. slowest wins.

Simpler example - Assume IB + GTX 680(s):
1 GPU/single: GTX 680 = PCIe 3.0 x16 lanes
2 GPU's/SLI: GTX 680 = PCIe 3.0 x8 lanes per GPU

ALL LGA 1155 are 16 Lanes of PCIe to the GPU(s), the variable is whether it's PCIe 2.0 bandwidth or PCIe 3.0 bandwidth.

Example:
x8 PCIe 3.0 = x16 PCIe 2.0 ; bandwidth
April 25, 2012 5:23:00 PM

Does this mean that with such mobo I won't be able to have a full PCI-E 3 2-SLI 680? :) 
a c 717 V Motherboard
a c 207 Ĉ ASUS
April 25, 2012 6:34:51 PM

If by 'full' you mean x16/x16 PCIe 3.0 then no. To be clear I am a PCIe lane snob and PCIe 3.0 x8/x8 is a ridiculous amount of bandwidth to the GTX 680 at ANY resolution.
April 25, 2012 7:00:19 PM

jaquith said:
If by 'full' you mean x16/x16 PCIe 3.0 then no. To be clear I am a PCIe lane snob and PCIe 3.0 x8/x8 is a ridiculous amount of bandwidth to the GTX 680 at ANY resolution.


Thanks for all the info mate, it's been a pleasure!
!