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Difference between PCI Express x16 and PCI Express 2.1 x16?

Tags:
  • Graphics Cards
  • Motherboards
  • PCI Express
  • Graphics
  • Product
Last response: in Graphics & Displays
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April 5, 2012 8:12:44 PM

Hey, Does it matter when buying a graphic card to check the PCI? my motherboard has x1 PCIe x16 slot,
the (ASUS M5A78L-M/USB3)but I'm uncertain if its compatible with PCI Express 2.1 x16. that's the complicated question I've been stuck on..
I'm looking to buy the ASUS EAH6770 DC SL/2DI/1GD5 Graphics card - 1 GB - GDDR5 SDRAM, But am unsure if it will work.

I'm really new at this, and honestly haven't got a clue what to do, so any suggestions or advice would be much appreciated! :bounce: 


All i have is a motherboard, i need to buy a CPU and a Graphics Card. what would you recommend for general gaming, such as Battlefield 3, and command and conquer, a lot of first person shooters games and strategy games I'm really into.


Motherboard:
ASUS - M5A78L-M/USB3
AM3+ based Motherboard with EPU power optimization.

Form Factor: uATX Form Factor

More about : difference pci express x16 pci express x16

April 5, 2012 8:26:01 PM

Odd that the Asus site doesn't specify what version of PCIe the mobo has.

However, if the board supports USB 3 then it is a safe bet that it support at least PCIe 2.0.

You should be just find with that mobo / video card combo.

According to this site it is 2.0

http://shop.amd.com/uk/All/Detail/Motherboard/M5A78L-M!2FUSB3
April 5, 2012 8:32:00 PM

Eddy767 said:
Hey, Does it matter when buying a graphic card to check the PCI? my motherboard has x1 PCIe x16 slot,
the (ASUS M5A78L-M/USB3)but I'm uncertain if its compatible with PCI Express 2.1 x16. that's the complicated question I've been stuck on..
I'm looking to buy the ASUS EAH6770 DC SL/2DI/1GD5 Graphics card - 1 GB - GDDR5 SDRAM, But am unsure if it will work.

I'm really new at this, and honestly haven't got a clue what to do, so any suggestions or advice would be much appreciated! :bounce: 


All i have is a motherboard, i need to buy a CPU and a Graphics Card. what would you recommend for general gaming, such as Battlefield 3, and command and conquer, a lot of first person shooters games and strategy games I'm really into.


Motherboard:
ASUS - M5A78L-M/USB3
AM3+ based Motherboard with EPU power optimization.

Form Factor: uATX Form Factor


2.1 has a larger bandwith, so it's a bit faster, hardly noticeable difference.. But your card will work on it either way.
Related resources
a c 92 U Graphics card
a b V Motherboard
April 5, 2012 8:47:05 PM

2.1 was just small specification changes from 2.0.

2.0 has 2x the bandwidth as 1.0 but at x16 its barely noticeable unless you use a top end card.
April 5, 2012 8:57:09 PM

Oops meant to put that on a different thread not this one xD sorry.
a c 92 U Graphics card
a b V Motherboard
April 5, 2012 8:58:18 PM

thats illegal and shouldn't be post on this forum.
April 5, 2012 8:58:33 PM

bros. u couldn't understand how naive I've been over computers, i literally know nothing about computers and I'm in the deep end lol the Asus website and curry's website just tells me this and it doesn't help, i had to Google "mobo" for what it stands for

Expansion Slots 1 x PCIe x16
1 x PCIe x1
2 x PCI

then when i looked at graphic cards it comes up with with PCI 2.0 and others so i don't know really... this maybe going to turn into a loooong mission trying to do... just picking what items work with what is so confusing, and why is their like 10million CPU's all with different prices? whats that about and what processor do you guys use or suggest would work best with my mobo! :p 
April 5, 2012 9:00:57 PM

esrever said:
thats illegal and shouldn't be post on this forum.


Yeah I posted on a different one, how do I remove it?
April 5, 2012 9:09:08 PM

lol hes pulling your leg mate, course u can post on this!... i did
April 5, 2012 9:18:07 PM

if your graphics card comes with pcie 2.x or new pcie 3.x and you put it into a mobo with graphics slot pcie 1.x it will run at 1.x...

pcie's are backwards compatible you just won't unitizing its full potential and may bottle neck.
April 5, 2012 9:34:56 PM

daysyang said:
if your graphics card comes with pcie 2.x or new pcie 3.x and you put it into a mobo with graphics slot pcie 1.x it will run at 1.x...

pcie's are backwards compatible you just won't unitizing its full potential and may bottle neck.


so basically the mobo is 1.0, and the latest out is 3.0? so i need a new mobo to upgrade the graphics potential? :o ! or can people buy a 2.1 or 3.0 connector? and upgrade it buy changing that part over? thx!
a b U Graphics card
a c 329 V Motherboard
April 5, 2012 9:42:00 PM

Arlen10 said:
Thank you, I understand.

Cool!
April 5, 2012 9:50:46 PM

yes if your mobo is pcie 1.x you would want to get something that is gen3/pcie 3.0 for graphics card with pcie 3.0... but it will be okay on pcie 2.x...

no you just cant buy a connector because its built into the chipset of the mobo

a c 92 U Graphics card
a b V Motherboard
April 5, 2012 9:51:46 PM

1.0 will work fine for gpus under $400 with no difference in performance.
!