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PCI-Express 3.0 explained

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GravitySmacked 27th November 2010, 10:31 Quote
Backwards compatible, thank god.
wuyanxu 27th November 2010, 10:44 Quote
with different encoding method, presumably the controller chip will need to understand both for backwards compatibility. wouldn't that drive the cost of motherboard and graphics card up?
Bindibadgi 27th November 2010, 11:05 Quote
Quote:
Originally Posted by wuyanxu
with different encoding method, presumably the controller chip will need to understand both for backwards compatibility. wouldn't that drive the cost of motherboard and graphics card up?

Not really, it's just another fixed function in the silicon. The fact that it's faster already pushes up cost more because of the quality of raw materials needed to make the faster process reliable.
Instagib 27th November 2010, 11:20 Quote
Quote:
Originally Posted by GravitySmacked
Backwards compatible, thank god.

+1 That was the biggest pain in the arse about AGP -> PCI-E.
adidan 27th November 2010, 11:24 Quote
Quote:
Originally Posted by Bindibadgi
Not really, it's just another fixed function in the silicon. The fact that it's faster already pushes up cost more because of the quality of raw materials needed to make the faster process reliable.
But the article says that it will be cheaper to make as it draws less power...
battles_atlas 27th November 2010, 12:02 Quote
Quote:
Originally Posted by Instagib
Quote:
Originally Posted by GravitySmacked
Backwards compatible, thank god.

+1 That was the biggest pain in the arse about AGP -> PCI-E.

Yeah I'm still pissed about how my old PC basically became obselete three months after I bought it
NickCPC 27th November 2010, 12:12 Quote
Nice article Rich, it's good to read some more technical stuff every once in a while.
frontline 27th November 2010, 12:28 Quote
Interesting - more bandwidth for the future console ports.
Bindibadgi 27th November 2010, 12:51 Quote
Quote:
Originally Posted by adidan
But the article says that it will be cheaper to make as it draws less power...

No it says that 8GT/s is cheaper than 10GT/s, yet provides the same usable bandwidth. ;) It's a relative amount :)
adidan 27th November 2010, 13:43 Quote
Quote:
Originally Posted by Bindibadgi
No it says that 8GT/s is cheaper than 10GT/s, yet provides the same usable bandwidth. ;) It's a relative amount :)
Ah got ya. 8GT/s cheaper than 10GT/s but still more expensive than the 5GT/s of PCIe 2.0. It was early. :D

One thing though, are graphics cards close to maxing out the usage of PCIe2.0? I am a relative noob in this respect.
Tulatin 27th November 2010, 13:43 Quote
I'm thankful they didn't increase power consumption again. 150W through the slot is plenty, and considering many enthusiasts own a power supply with at least a 6 pin connector, so we should be fine (Plus, I don't think people are going to be running 580 GTX cards with the current limiter off on 400W units)
AndreiD 27th November 2010, 13:47 Quote
Quote:
Originally Posted by adidan

One thing though, are graphics cards close to maxing out the usage of PCIe2.0? I am a relative noob in this respect.

If I recall right, they didn't even max out PCIe1.1
wuyanxu 27th November 2010, 14:18 Quote
i don't think even gtx580 are hitting PCIe 2.0 limits.

i shall take this upon myself and test :D if i place my sound card in 2nd 16x slot on my mobo, i'll force main GPU to run at 8x mode, which i can then test to see if performance is being limited. my guess is gtx580 won't even use full 8x PCIe 2.0 at the moment.
Fizzban 27th November 2010, 14:22 Quote
Quote:
Originally Posted by GravitySmacked
Backwards compatible, thank god.

You said it. Phew!
Ljs 27th November 2010, 16:40 Quote
Quote:
Originally Posted by frontline
Interesting - more bandwidth for the future console ports.

Indeed!
Yslen 27th November 2010, 18:10 Quote
I'm sure I've seen tests somewhere that showed the GTX 480 wasn't restricted by x8, so as we already have x16 waiting to become useful, who on earth is going to make use of this at any point before 2015?
Mraedis 27th November 2010, 18:22 Quote
High performance SSD's? ^^
HourBeforeDawn 27th November 2010, 18:59 Quote
So since graphics cards arent saturating 2.0 specs I would assume this is more aimed at highend Raid SSD PCI-E devices? at least for the time being....
Yslen 27th November 2010, 19:15 Quote
Quote:
Originally Posted by HourBeforeDawn
So since graphics cards arent saturating 2.0 specs I would assume this is more aimed at highend Raid SSD PCI-E devices? at least for the time being....

Actually there's an SSD still on the front page that could make use of it... I guess it will trickle down to us little guys eventually though.
Turbotab 27th November 2010, 19:32 Quote
By the time PCI-E 3.0 become necessary, Light Peak will probably have taken over, unless 4k monitors suddenly appear at bargain prices!
frontline 27th November 2010, 20:02 Quote
PCI-E 1.0 at x16 mode or PCI-E 2.0 at x8 is probably still more than adequate for today's high end cards.

It would be nice to run on PCI-E 3.0 at x4 mode though and still get top performance. :)
Lockon Stratos 27th November 2010, 20:56 Quote
PCI-Ex 3.0, USB 3 & SATA 3 - sounds like a spiffingly good time to upgrade
Cthippo 27th November 2010, 22:02 Quote
Quote:
Originally Posted by Lockon Stratos
PCI-Ex 3.0, USB 3 & SATA 3 - sounds like a spiffingly good time to upgrade

Except that one isn't available yet and another has already been overtaken :D
WarrenJ 27th November 2010, 22:17 Quote
in respect to the new hardware, are we coming any where near saturating the old hardware? Will this be a must have upgrade when NVidia/Ati release yet another family of cards? Are we upgrading just because "its new!?"

On that thought, is there a piece of hardware gpu or not that actually saturates a pci-e 2 port?
Lockon Stratos 27th November 2010, 22:39 Quote
Quote:
Originally Posted by Cthippo
Quote:
Originally Posted by Lockon Stratos
PCI-Ex 3.0, USB 3 & SATA 3 - sounds like a spiffingly good time to upgrade

Except that one isn't available yet and another has already been overtaken :D

not to mention the fact that Sata 3 (6GB/s) is more a gimmick and only useful if you use with a SSD or 15k RPM hard drive. since hard drives dont even max out the sata 2 bandwidth.
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