GeForce 9800 GTX vs Iris Plus Graphics 645

In this comparison between GeForce 9800 GTX and Iris Plus Graphics 645 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce 9800 GTX will be the best choice, for others Iris Plus Graphics 645 will be their preference. Study the comparison tables below and make your choice.

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 9800 GTX Iris Plus Graphics 645
Power consumption (TDP) 140 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Supplementary power connectors 2x 6-pin
Memory type GDDR3 DDR3/DDR4
Maximum RAM amount 512 MB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • GeForce 9800 GTX has 833% more power consumption, than Iris Plus Graphics 645.
  • GeForce 9800 GTX is connected by PCIe 2.0 x16, and Iris Plus Graphics 645 uses PCIe 3.0 x1 interface.
  • GeForce 9800 GTX is used in Desktops, and Iris Plus Graphics 645 - in Laptops.
  • GeForce 9800 GTX is build with Tesla architecture, and Iris Plus Graphics 645 - with Gen. 9.5 Coffee Lake.
  • Core clock speed of GeForce 9800 GTX is 1388 MHz higher, than Iris Plus Graphics 645.
  • GeForce 9800 GTX is manufactured by 65 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 9800 GTX.

Full Specs

  GeForce 9800 GTX Iris Plus Graphics 645
Architecture Tesla Gen. 9.5 Coffee Lake
Code name G92 Kaby Lake GT3e
Type Desktop Laptop
Release date 28 March 2008 10 July 2019
Pipelines 128 48
Core clock speed 1688 MHz 300 MHz
Boost Clock 1150 MHz
Transistor count 754 million
Manufacturing process technology 65 nm 14 nm
Texture fill rate 43.2 billion/sec 50.40
Floating-point performance 432.1 gflops
Length 10.5" (26.7 cm)
Memory bus width 256 Bit
Memory clock speed 1100 MHz
Memory bandwidth 70.4 GB/s
Shared memory +
DirectX 11.1 (10_0) 12 (12_1)
Shader Model 4.0 6.4
OpenGL 2.1 4.6
OpenCL 1.1 2.1
Vulkan N/A 1.1.103
CUDA +
CUDA cores 128
Bus support PCI-E 2.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support +
HDMI Via Adapter
Maximum VGA resolution 2048x1536
Audio input for HDMI S/PDIF
Quick Sync +
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