Barty1884 :
A GTX1080TI :lol:
It's too simplistic to look just at the PCIe revision - there's many more factors.
Strictly speaking, the 1080TI is the "best" (consumer) card that could run in it..... but chances are pretty good you've got a CPU that'll bottlneck it, potentially hard.
What are your system components currently, and what is your budget for the upgrade?
I have HP xw6400
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System Information
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Time of this report: 11/14/2017, 22:08:19
Machine name: AYOUB-PC
Operating System: Windows 7 Professionnel 64-bit (6.1, Build 7601) Service Pack 1
Language: French (Regional Setting: French)
System Manufacturer: Hewlett-Packard
System Model: HP xw6400 Workstation
BIOS: Default System BIOS
Processor: Intel(R) Xeon(R) CPU 5150 @ 2.66GHz (4 CPUs), ~2.7GHz
Memory: 4096MB RAM
Available OS Memory: 4096MB RAM
Page File: 3546MB used, 4642MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode
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Display Devices
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Card name: NVIDIA GeForce 210
Manufacturer: NVIDIA
Chip type: GeForce 210
DAC type: Integrated RAMDAC