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post #281 of 314
Only when referring to the Z68 boards. I think the only X79 boards that don't support PCIe 3 are the intel boards.
    
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post #282 of 314
Quote:
Originally Posted by Oedipus View Post

Only when referring to the Z68 boards. I think the only X79 boards that don't support PCIe 3 are the intel boards.

The Intel boards support PCI-e 3.0.
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post #283 of 314
So I bought the Asus Rampage IV Extreme with the 3930K, along with 32GB's of Corsair Vengeance ram. As anyone else would be, I was like a kid at Christmas whose parents bought them something they really wanted. I take it to work to build it with a coworker and lo and behold only 6 out of the 8 DIMM slots are recognizing ram.

I tried all kinds of trickery to get it to work, but to no avail. Spent hours and hours messing with different buttons, different ram, resetting everything to default settings and still no go. I'm RMA'ing it on Monday, but for now I'm just enjoying my 24GB's and 12 threads of goodness. Hard to complain to someone saying..GAhh but I don't have 32 gigs only 24!!! lol.

So does anyone have any witchcraft and or advice on how to troubleshoot further? I called Asus tech support and explained for 10 minutes what I tried and all he had to say was..."oh it's not working? you better RMA then." Which I guess is logical...just thought we could have tried something.

For what it's worth here it is in my case, along with a tm screenie(excuse the cable mgmt)
QqxvZ.jpg

R19gV.png
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post #284 of 314
I've had several memory slots/channels get shut down by overtightening my CPU block. The problem turned out to be a lack of non-conductive gaskets beneath the block screws. Make sure the metal on your heatsink isn't jumping to the RAM traces.
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post #285 of 314
Quote:
Originally Posted by O of 5ths View Post

So I bought the Asus Rampage IV Extreme with the 3930K, along with 32GB's of Corsair Vengeance ram. As anyone else would be, I was like a kid at Christmas whose parents bought them something they really wanted. I take it to work to build it with a coworker and lo and behold only 6 out of the 8 DIMM slots are recognizing ram.
I tried all kinds of trickery to get it to work, but to no avail. Spent hours and hours messing with different buttons, different ram, resetting everything to default settings and still no go. I'm RMA'ing it on Monday, but for now I'm just enjoying my 24GB's and 12 threads of goodness. Hard to complain to someone saying..GAhh but I don't have 32 gigs only 24!!! lol.
So does anyone have any witchcraft and or advice on how to troubleshoot further? I called Asus tech support and explained for 10 minutes what I tried and all he had to say was..."oh it's not working? you better RMA then." Which I guess is logical...just thought we could have tried something.
For what it's worth here it is in my case, along with a tm screenie(excuse the cable mgmt)

Please tell me you didn't buy 32 GB of RAM to game? Are you doing like 4K video encoding that you need that much RAM?
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post #286 of 314
I don't know why it's so hard to just let people buy what they want. He doesn't need an excuse to have that much RAM.

All I know is that you guys aren't going to like the 96GB that I put in my SR-X.
    
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post #287 of 314
Quote:
Originally Posted by mymlan View Post

I've had several memory slots/channels get shut down by overtightening my CPU block. The problem turned out to be a lack of non-conductive gaskets beneath the block screws. Make sure the metal on your heatsink isn't jumping to the RAM traces.

Interesting.

I'll try that and come back later with results. +rep.
Edited by O of 5ths - 11/24/11 at 7:45pm
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post #288 of 314
Quote:
Originally Posted by CallsignVega View Post

Please tell me you didn't buy 32 GB of RAM to game? Are you doing like 4K video encoding that you need that much RAM?

I look at it this way.

An automobile enthusiast will spend thousands of dollars on aesthetics and upgrades for his engine or chassis, yet he will still need to go the speed limit. The upgrades to the outside of the car are going to produce minimal if null improvements as well. But this doesn't really matter to the enthusiast. He's doing it because it's what he enjoys and does not take practicality into the highest priority.

And if you were to compare my PC to his car, I would truthfully get more practicality out of it since I'm using my PC more than I or he is driving.
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post #289 of 314
Quote:
Originally Posted by Oedipus View Post

I don't know why it's so hard to just let people buy what they want. He doesn't need an excuse to have that much RAM.
All I know is that you guys aren't going to like the 96GB that I put in my SR-X.

hahaha can't wait to see this. I love being overly excessive with stuff (obviously not RAM for me though) thumb.gif
    
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post #290 of 314
Quote:
Originally Posted by 45nm View Post

I believe it has to do with the Die space available on LGA1155 processors.
Quote:
Intel Sandy Bridge E (6C) 32nm 6 2.27B 435mm2
Quote:
Intel Sandy Bridge 4C 32nm 4 995M 216mm2
http://www.anandtech.com/show/5091/intel-core-i7-3960x-sandy-bridge-e-review-keeping-the-high-end-alive
As you can see adding four extra 'real' cores increased die space by 219mm2. At the same time power consumption jumped by nearly 35W in terms of TDP. I believe the die space on LGA1155 does not allow for six core processors without increasing pin count which is why LGA2011 was introduced. If they could have introduced 6 and 8 core variants on LGA1155 they would have done so. There is also the fact that 32nm processor node was required (AMD managed it on 45nm which is fantastic) before Gulftown could be introduced.

Interesting thoughts, I'd like to add to them.

290

You can see on a client sandy bridge die shot that the memory controller is the only component above or below the CPU cores. All other components are to the sides. There is also a great deal of dead space beside the memory controller, presumably to facilitate core count scalability (from 4 to 2 cores). If the ring bus cache architecture allows so many linear stops in a row, it looks relatively simple to lay out a six core client type sandy bridge processor. A client Sandy Bridge die is about 208.5 by 103.6 mm, for a die size of about 216 mm^2. A Sandy Bridge Core is about 3.18 mm across, so the die of a hypothetical 32nm six core client sandy bridge would be 272.3*103.5 mm or 282 mm^2.

Even with four extra cores, the die size would only be 348 mm^2. At 22nm this could be less than 220 mm^2. For 32nm, this is only an extra 132 mm^2 of die space, compared to the 219 mm^2 extra allotted to Sandy Bridge-E. The remainder in SB-E is taken up by the extra 25% of L3 cache per core, the 40 lane PCI-E controller, the 4 channel memory controller, and the QPI links.

For a 282 mm^2 six core at 32nm, this is smaller than Lynnfield at 296 mm^2, which fit into an LGA1156 package. I don't believe the die space is what's preventing a six core from fitting into LGA1155. I also don't think that the lack of 6 or 8 core chips on 1155 is proof of their impossibility. I think it's probably a lack of competitive pressure from AMD and a reluctance on Intel's part to have a single DDR3 memory channel feeding more than two cores. The rumors are suggesting that even Haswell will not have more than 4 cores on LGA1150, so I suspect it will be a very long time before we see Intel put more than four cores on a mainstream platform. (I estimate that a 22nm 8 Core Ivy Bridge-E die would be also be smaller than Lynnfield, so again I suspect this is not due to die size, but mainly market positioning.)
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