GeForce 8800 GTX vs Iris Plus Graphics 645

Find out if it is worth upgrading your current GPU setup by comparing GeForce 8800 GTX and Iris Plus Graphics 645. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce 8800 GTX and Iris Plus Graphics 645. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Iris Plus Graphics 645 is a Laptop Graphics Card

Note: Iris Plus Graphics 645 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 645 here:

Main Specs

  GeForce 8800 GTX Iris Plus Graphics 645
Power consumption (TDP) 155 Watt 15 Watt
Interface PCIe 1.0 x16 PCIe 3.0 x1
Supplementary power connectors 2x 6-pin
Memory type GDDR3 DDR3/DDR4
Maximum RAM amount 768 MB
Display Connectors 2x DVI, 1x S-Video No outputs
  Check Price
  • GeForce 8800 GTX has 933% more power consumption, than Iris Plus Graphics 645.
  • GeForce 8800 GTX is connected by PCIe 1.0 x16, and Iris Plus Graphics 645 uses PCIe 3.0 x1 interface.
  • GeForce 8800 GTX is used in Desktops, and Iris Plus Graphics 645 - in Laptops.
  • GeForce 8800 GTX is build with Tesla architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
  • Core clock speed of GeForce 8800 GTX is 276 MHz higher, than Iris Plus Graphics 645.
  • GeForce 8800 GTX is manufactured by 90 nm process technology, and Iris Plus Graphics 645 - by 14 nm process technology.

Game benchmarks

high / 1080p 0−1 4−5
ultra / 1080p 2−3
QHD / 1440p 0−1 0−1
low / 720p 1−2 12−14
medium / 1080p 0−1 5−6
The average gaming FPS of Iris Plus Graphics 645 in Assassin's Creed Odyssey is 1200% more, than GeForce 8800 GTX.

Full Specs

  GeForce 8800 GTX Iris Plus Graphics 645
Architecture Tesla Gen. 9.5 Coffee Lake
Code name G80 Kaby Lake GT3e
Type Desktop Laptop
Release date 8 November 2006 10 July 2019
Pipelines 128 48
Core clock speed 576 MHz 300 MHz
Boost Clock 1150 MHz
Transistor count 681 million
Manufacturing process technology 90 nm 14 nm
Texture fill rate 36.8 billion/sec 50.40
Floating-point performance 345.6 gflops
Length 270 mm
Memory bus width 384 Bit
Memory clock speed 900 MHz
Memory bandwidth 86.4 GB/s
Shared memory +
DirectX 11.1 (10_0) 12 (12_1)
Shader Model 4.0 6.4
OpenGL 3.3 4.6
OpenCL 1.1 2.1
Vulkan N/A 1.1.103
CUDA +
CUDA cores 575
SLI options +
Quick Sync +
  Check Price