GeForce GTX 275 vs Iris Plus Graphics 640

When comparing GeForce GTX 275 and Iris Plus Graphics 640, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GTX 275 and Iris Plus Graphics 640 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Iris Plus Graphics 640 is a Laptop Graphics Card

Note: Iris Plus Graphics 640 is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Iris Plus Graphics 640 here:

Main Specs

  GeForce GTX 275 Iris Plus Graphics 640
Power consumption (TDP) 219 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Supplementary power connectors 2x 6-pin
Memory type GDDR3 DDR3L/LPDDR3/DDR4
Maximum RAM amount 896 MB 32 GB
Display Connectors 2x DVI No outputs
  Check Price Check Price
  • GeForce GTX 275 has 1360% more power consumption, than Iris Plus Graphics 640.
  • GeForce GTX 275 is connected by PCIe 2.0 x16, and Iris Plus Graphics 640 uses PCIe 3.0 x1 interface.
  • GeForce GTX 275 has 864 GB more memory, than Iris Plus Graphics 640.
  • GeForce GTX 275 is used in Desktops, and Iris Plus Graphics 640 - in Laptops.
  • GeForce GTX 275 is build with Tesla 2.0 architecture, and Iris Plus Graphics 640 - with Gen. 9.5 Kaby Lake.
  • Core clock speed of GeForce GTX 275 is 1104 MHz higher, than Iris Plus Graphics 640.
  • GeForce GTX 275 is manufactured by 55 nm process technology, and Iris Plus Graphics 640 - by 14 nm process technology.

Game benchmarks

high / 1080p 6−7 6−7
ultra / 1080p 4−5 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 16−18
medium / 1080p 8−9 8−9
GeForce GTX 275 and Iris Plus Graphics 640 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 275 Iris Plus Graphics 640
Architecture Tesla 2.0 Gen. 9.5 Kaby Lake
Code name GT200B Kaby Lake GT3e
Type Desktop Laptop
Release date 15 January 2009 3 January 2017
Pipelines 240 48
Core clock speed 1404 MHz 300 MHz
Boost Clock 1050 MHz
Transistor count 1,400 million 189 million
Manufacturing process technology 55 nm 14 nm
Texture fill rate 50.6 billion/sec 52.80
Floating-point performance 673.9 gflops
Length 10.5" (267 mm) (26.7 cm)
Memory bus width 448 Bit 64/128 Bit
Memory clock speed 1134 MHz
Memory bandwidth 127.0 GB/s
Shared memory +
DirectX 11.1 (10_0) 12 (12_1)
Shader Model 4.0 6.4
OpenGL 3.0 4.6
OpenCL 1.1 2.1
Vulkan N/A 1.1.103
CUDA +
CUDA cores 240
Bus support PCI-E 2.0
Height 4.376" (111 mm) (11.1 cm)
SLI options +
Multi monitor support +
Maximum VGA resolution 2048x1536
Audio input for HDMI S/PDIF
Quick Sync +
  Check Price Check Price