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[brightsideofnews.com] PCI-e 3.0 featured with msi Z68A-gd80 computex - Page 4

post #31 of 41
Will be pci-e 3.0 also in 990x (990fx) chipsets ?
Why does this mobo x79 extreme 4 have so strange ram slot positions ?
Totaly useless if you have ram cooler on them
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post #32 of 41
Quote:
Originally Posted by LukaTCE View Post
Will be pci-e 3.0 also in 990x (990fx) chipsets ?
Why does this mobo x79 extreme 4 have so strange ram slot positions ?
Totaly useless if you have ram cooler on them
lower ram latency. in my opinion is very good design.
post #33 of 41

What's the point of gen3 ? You can barely fill or surpass x8 pci-express bandwidth with 56**x12** on sli or crossfire. If they wanna sell pricey stuff, they should put best quality vrms / mosfets on their boards.

PS:

Oh sorry, there's a difference in x8 and x16 for 6990. x16 -> x3330 - x8 -> x3312 and x4 -> x3235. Damn 18 points between 16 and 8, that justifies everything, bummer (x3235 for x4)
Edited by Catscratch - 6/6/11 at 3:25am
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post #34 of 41
Quote:
Originally Posted by prznar1 View Post
pci-e 3.0 is not about video cards at all.
i will be doing this for few more times.
post #35 of 41
Cool, i'll check posts then, it should be about something critical right ?

"its not about video cards. its for lowering costs of motherboards and chipsets that would get just more and more pci-e lanes to feed raid cards with ssds on them. with pci-e 3.0 you can feed more ssd's with same lanes count."

Oh now it makes, still no sense. Well, what was the percentage of SSD users in the market again ? Maybe it's a hindsight that SSD's will get bigger and cheaper super soon.
Edited by Catscratch - 6/6/11 at 3:37am
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post #36 of 41
they will. also they will be much much faster to. they are already using full sata III bandwidth. also think about pcie based ssd's like ocz revo. next gen will be 3.0 for sure.
Edited by prznar1 - 6/6/11 at 3:49am
post #37 of 41
If you would of read the source it tells you that they reduced overhead on the PCIe lanes from 20% down to 1.5%. For X79, which actually supports the speed boost, PCIe 3.0 is more for RAID SSDs/possible Thunderbolt upgrade/etc kind of devices. New features have to be built into motherboards before they become widely adopted. If you don't use an SSD you don't need SATA3 either yet there's no reason to complain about it being added to motherboards.

Not all the PCIe lanes operate at the higher bandwidth of Gen3 though. This board just uses the raw data transfer capabilities of Gen3 to reduce overhead which can decrease latency as well. Wait for a reply from MSIAlex to see the whole reasoning behind this.

It's possible that some of the X79 boards are doing the same thing by using PCIe 3.0 lanes for the same reason but only one lane actually gets the full speed.
post #38 of 41
Quote:
Originally Posted by disemvoweled View Post
From what I've read, PCI-E 3.0 should give about a 50-60% increase in data transfer rate over 2.0. The extra efficiency that comes along with this will be a nice benefit, but is there anything out there that is saturating the current standard's bandwidth?
nop , even a 6990 OCD isnt bottlenecked by a 16x PCIE 2.0 , but you will see a 5-10% decrease in real world performance if used in PCIE running at 8x.

Bah except a very high end SSD , that can read/write more than 500mb/sec

Edit: Just saying i found this on wiki

Following a six-month technical analysis of the feasibility of scaling the PCIe interconnect bandwidth, PCI-SIG's analysis found out that 8 gigatransfers per second can be manufactured in mainstream silicon process technology, and can be deployed with existing low-cost materials and infrastructure, while maintaining full compatibility (with negligible impact) to the PCIe protocol stack.
PCIe 2.0 delivers 5 GT/s, but employs an 8b/10b encoding scheme which results in a 20 percent ((10-8)/10) overhead on the raw bit rate. PCIe 3.0 removes the requirement for 8b/10b encoding and instead uses a technique called "scrambling" in which "a known binary polynomial is applied to a data stream in a feedback topology. Because the scrambling polynomial is known, the data can be recovered by running it through a feedback topology using the inverse polynomial"[17] and also uses a 128b/130b ((130-128)/130)encoding scheme, reducing the overhead to approximately 1.5%, as opposed to the 20% overhead of 8b/10b encoding used by PCIe 2.0. PCIe 3.0's 8 GT/s bit rate effectively delivers double PCIe 2.0 bandwidth. According to an official press release by PCI-SIG on 8 August 2007:
Edited by DarkBlade6 - 6/6/11 at 6:41am
post #39 of 41
Quote:
Originally Posted by DarkBlade6 View Post
nop , even a 6990 OCD isnt bottlenecked by a 16x PCIE 2.0
:
It's bottlenecked by power though, unless i'm mistaken PCI-E 3.0 allows for more power through the slot than pci-e 2.1
that would mean either no need for extra power cables (and therefore less cable mess to sort out for us too) or GPUs that have more power going to them allowing for higher clockspeeds in overclocking and at stock.

and also theres SSDs and raidcards etc...


would also allow asus to make their soundcards not need external power (you realise how annoying it is to find out you don't have the right power cables and therefore can't use certain soundcards?)
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post #40 of 41
Quote:
Originally Posted by kyle-reece View Post
It's bottlenecked by power though, unless i'm mistaken PCI-E 3.0 allows for more power through the slot than pci-e 2.1
that would mean either no need for extra power cables (and therefore less cable mess to sort out for us too) or GPUs that have more power going to them allowing for higher clockspeeds in overclocking and at stock.

and also theres SSDs and raidcards etc...


would also allow asus to make their soundcards not need external power (you realise how annoying it is to find out you don't have the right power cables and therefore can't use certain soundcards?)
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