Overclock.net › Forums › Intel › Intel - General › z68 PCI-E 3.0 and Kepler Upgrade Question
New Posts  All Forums:Forum Nav:

z68 PCI-E 3.0 and Kepler Upgrade Question

post #1 of 7
Thread Starter 
I just brought an 1155 Asus z68 motherboard with a core i5 2500k. However, I am doubting my purchasing only because of PCI-e 3.0 with socket 2011. Here is why I am worried. For arguments sake let's say hypothetically that the next Nvidia GPU (Kepler - GTX 680) has 1024 stream processors and can saturate the PCI-e 2.0 interface (you can comment on how likely this senario is if you want). Now I know that they will have z68 motherboards that support PCI-e 3.0, but will it be capable of the full 16GB/s?

From my understanding the i5 2500k has 16 lanes integrated into the CPU. Is that enough? Socket 2011 has 40, is that specifically for multi-GPu solutions? I don't plan to SLI in the future and I would just like to make sure I am not going to have to do an expensive upgrade in the near future (I'm fine with just upgrading the motherboard and later the GPU next summer).

Basically, my main questions are as follows:

1. How limited is a z68 PCI-e 3.0 solution compared to a socket 2011 solution?
2. Will I need an Ivy Bridge processor?
3. Will a z68 PCI-e 3.0 capable mobo have the full bandwidth for single GPU solutions?
4. Do current GPUs such as the GTX590 or HD 6990 saturate PCI-e 2.0?

Any help in putting my worries to rest is appreciated .
Edited by SocketConundrum - 6/8/11 at 2:27am
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
post #2 of 7
1.Z68 is PCIe 2.0 with electrical compatibility for 3.0 cards, but it does not support 3.0 transfer rates. X79 does support 3.0 fully from the chipset. Z68, as P67 & H67 have NO PCIe interfaces, all PCIe lanes are from the Sandy Bridge CPU; IvyB may support PCIe 3.0.
2.No, IvyB will be available for 1155 (initially) & 2011 (later)
3.Again, current Z68 boards are 2.0, but likely it'll have enough for a 1000SP Kepler (though imho it's highly doubtful Nv can cram that much tranzistors on 28nm from the first try)
4.Not really, but by dropping them to 8x you see a performance hit. They likely get to some 75% of what is practically achievable in PCIe 2.0. Kepler won't be much higher as it won't be more chip than 2xGTX580

cheers, welcome to the forum
Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
  hide details  
Reply
Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
  hide details  
Reply
post #3 of 7
Thread Starter 
Quote:
Originally Posted by dragosmp View Post
1.Z68 is PCIe 2.0 with electrical compatibility for 3.0 cards, but it does not support 3.0 transfer rates. X79 does support 3.0 fully from the chipset. Z68, as P67 & H67 have NO PCIe interfaces, all PCIe lanes are from the Sandy Bridge CPU; IvyB may support PCIe 3.0.
So, to take advantage of the extra bandwidth of PCI-e 3.0 (should I in fact require it) I would need a new 1155 PCI-e 3.0 supported mobo and a new processor based on Ivy Bridge when it is released (if it supports PCI-e 3.0)? And, Sandy Bridge, despite having 16 lanes integrated into the CPU is not compatible with PCI-e 3.0?

Quote:
cheers, welcome to the forum
Thank you, and thank you for replying
Edited by SocketConundrum - 6/8/11 at 11:05am
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
post #4 of 7
Quote:
Originally Posted by SocketConundrum View Post
So, to take advantage of the extra bandwidth of PCI-e 3.0 (should I in fact require it) I would need a new 1155 PCI-e 3.0 supported mobo and a new processor based on Ivy Bridge when it is released (if it supports PCI-e 3.0)? And, Sandy Bridge, despite having 16 lanes integrated into the CPU is not compatible with PCI-e 3.0?


Thank you, and thank you for replying
No current sandybridge cpu's are not compatible but.....

I believe msi z68 gd80 is offering pcie 3.0 built in to the board, ready for you to stick an ivy cpu into it once released, But it will not be fully useable until msi has released an uefi update once the new ivy cpu's arrive, So yes you can still buy an 1155 board that will benefit from pcie 3.0 bandwidth once ivy arrives

http://www.contorium.org/msi-squeeze...therboard.html
Edited by Chewy - 6/8/11 at 11:23am
Chewy's Chomper
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7 6700k Asis Z170 Deluxe MSI GTX 1080 Gaming x 16GB Corsair vengence DDR4 3200 
Hard DriveCoolingOSMonitor
Samsung M2 256gb nvme Custom loop, 360+120 rads Windows 10 64bit Asus 28" MG28UQ 4K 
PowerCase
Seasonic X series 750w gold Corsair 400c 
  hide details  
Reply
Chewy's Chomper
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7 6700k Asis Z170 Deluxe MSI GTX 1080 Gaming x 16GB Corsair vengence DDR4 3200 
Hard DriveCoolingOSMonitor
Samsung M2 256gb nvme Custom loop, 360+120 rads Windows 10 64bit Asus 28" MG28UQ 4K 
PowerCase
Seasonic X series 750w gold Corsair 400c 
  hide details  
Reply
post #5 of 7
Thread Starter 
I didn't see it in the article, but when is that motherboard going to be available? Is it already out? I would switch out my current motherboard for it in within a heart beat. That way I would only have to upgrade the processor later on.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
post #6 of 7
Quote:
Originally Posted by SocketConundrum View Post
I didn't see it in the article, but when is that motherboard going to be available? Is it already out? I would switch out my current motherboard for it in within a heart beat. That way I would only have to upgrade the processor later on.
It is already overdue in the uk since end of may so may already be out in the us ? i expect to see this board available anytime now
Chewy's Chomper
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7 6700k Asis Z170 Deluxe MSI GTX 1080 Gaming x 16GB Corsair vengence DDR4 3200 
Hard DriveCoolingOSMonitor
Samsung M2 256gb nvme Custom loop, 360+120 rads Windows 10 64bit Asus 28" MG28UQ 4K 
PowerCase
Seasonic X series 750w gold Corsair 400c 
  hide details  
Reply
Chewy's Chomper
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7 6700k Asis Z170 Deluxe MSI GTX 1080 Gaming x 16GB Corsair vengence DDR4 3200 
Hard DriveCoolingOSMonitor
Samsung M2 256gb nvme Custom loop, 360+120 rads Windows 10 64bit Asus 28" MG28UQ 4K 
PowerCase
Seasonic X series 750w gold Corsair 400c 
  hide details  
Reply
post #7 of 7
Thread Starter 
Quote:
Originally Posted by Chewy View Post
It is already overdue in the uk since end of may so may already be out in the us ? i expect to see this board available anytime now
Thank you so much for the help. If I can jump at this it will make upgrading much easier for me in the future. I, however, do not see it available in the US as of yet. I hope it is available before June ends (last day to return ASUS mobo is June 28th, but I may return it before that anyway just to grab this board). One thing to be careful of is that this board is Rev. G3 and not B3. So, for anyone reading along be careful and make sure it says PCI-e 3.0 in the specs (MSI Z68A-GD80 (G3)).
Edited by SocketConundrum - 6/8/11 at 12:08pm
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 2500k @ 4.7GHz/1.37V ASUS P8Z68-V EVGA GTX570 HD @ 825MHz Corsair Vengeance DDR3 1600MHz 
Hard DriveOSPowerCase
1TB Western Digital Windows 7 64bit Pro Corsair 620HX Antec 900 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel - General
Overclock.net › Forums › Intel › Intel - General › z68 PCI-E 3.0 and Kepler Upgrade Question