Is my PCIe x16 v1, v2 or v3?

Calaal

TS Rookie
I have decide to get a gtx 750ti lp for my pc which is a bit old, I used CPUZ to find the version of my pcie slot but there was no version stated there and I read somewhere that pcie without a version is usually 2.0, I dont want to use a powerful gpu on a v1 slot so please help me identify it.
this is the report
 

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cliffordcooley

TS Redneck
https://en.wikipedia.org/wiki/List_of_Intel_chipsets

  • P45 (Eaglelake)
    • Update of P35, with PCIe 2.0 support, Hardware Virtualization, Extreme Memory Profile (XMP) and support for ATI Crossfire (x8+x8).
    • Sub-versions:
      • P43 - P45 without Crossfire and DDR2-1066/DDR3-1333 support.
  • G45 (EaglelakeG)
    • A version of P45 that has a GMA X4500HD integrated graphics core and lacks Crossfire support.
    • Sub-versions:
      • G43 - Same feature reductions as P43, but with a GMA X4500 integrated graphics core.
  • Q45 (EaglelakeQ)
    • Expected G43 intended for Intel's vPro office computing brand. Also supports Hardware Virtualization Technology and Intel Trusted Platform Module 1.2 feature.
    • Sub-versions:
      • Q43 - Q45 without vPro support. Also lacks Intel Trusted Platform Module 1.2 support.
      • B43 - Q43 with an ICH10D South Bridge.
Please note all chipsets based on the P45 have PCIe 2.0. The P35 based boards are PCIe 1.1.
 

Calaal

TS Rookie
Hello sorry for the late reply but I checked the wiki and my chipset is supposed to have pcie 2.0 but I checked using two different softwares (hwinfo, gpi-z) and it shows pcie 1.1.
report.gif
report2.png
I think its maybe showing the pcoe version of my video card (gt 610) but iam not sure so if you know tell me please.
 

Calaal

TS Rookie
Your motherboard uses Intel's Q45 chipset - it only supports PCI Express v1.1:

https://ark.intel.com/content/www/us/en/ark/products/36527/intel-82q45-graphics-and-memory-controller-hub.html

Your graphics card supports v2.0 but the interface is forced to run at x4 v1.1

Edit: A GeForce GTX 750 Ti is rated to 60W which is below the maximum power limit of a PCIe v1.1 slot (75W), so it should work.
Thanks for the quick reply, but iam still a bit confused why is my card running at x4, my pcie x16 I know because x4 is alot smaller and x16 is longer like mine.
 

neeyik

TS Guru
Staff member
A PCIe 16x slot can run at 1x, 4x, 8x, or 16x depending on hardware support and BIOS settings. Unfortunately, in your case, it seems to be a limitation of either the Intel chipset or how HP have configured the whole system - I think this is your system:

http://www.hp.com/ctg/Manual/c01549447.pdf

If so, then page 75 seems to cover the issue:
If a PCIe graphics controller card is installed in the PCIe x4 /x16 slot, the integrated GMA will be disabled by default, but can be re-enabled through the BIOS settings to allow an alternate method of multi-monitor operation. Press the F10 key during the boot process to enter the ROM-based Setup utility and re-enable the GMA for multi-monitor operation. A PCIe x16 card installed in the PCIe x4/x16 slot will be limited to x4 operation.
Edit: Just noticed another part of that document:
These systems also include two PCIe graphics slots (one x16, one x4/x16 connector) to ensure full graphics upgrade capabilities.
Does your motherboard have two long PCI Express slots? If so, try putting the graphics card into the other slot.

Edit 2: Here's another document (hopefully it's still the right one!)

http://h10032.www1.hp.com/ctg/Manual/c01563108

Here you can see the two PCI Express slots - the white one, although it is a full 16x slot only runs at 4x, whereas the black/brown one runs at full 16x rate.
 
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Calaal

TS Rookie
A PCIe 16x slot can run at 1x, 4x, 8x, or 16x depending on hardware support and BIOS settings. Unfortunately, in your case, it seems to be a limitation of either the Intel chipset or how HP have configured the whole system - I think this is your system:

http://www.hp.com/ctg/Manual/c01549447.pdf

If so, then page 75 seems to cover the issue:


Edit: Just noticed another part of that document:

Does your motherboard have two long PCI Express slots? If so, try putting the graphics card into the other slot.

Edit 2: Here's another document (hopefully it's still the right one!)

http://h10032.www1.hp.com/ctg/Manual/c01563108

Here you can see the two PCI Express slots - the white one, although it is a full 16x slot only runs at 4x, whereas the black/brown one runs at full 16x rate.
You did it man!, and as it turns out it's 'gen 2' that is awesome thank you so much for your time and effort, iam so happy now.
 
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