Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game 645 GT3e GeForce 9800M GT SLI
Cyberpunk 2077 381% 742%
Assassins Creed: Valhalla 340% 670%
Call of Duty: Black Ops Cold War 326% 645%
FIFA 21 143% 325%
Microsoft Flight Simulator 326% 645%
Watch Dogs Legion 364% 712%
World of Warcraft: Shadowlands 589% 1107%
Grand Theft Auto VI 577% 1085%
Horizon: Zero Dawn 355% 697%
Genshin Impact 381% 742%

In terms of overall gaming performance, the graphical capabilities of the Intel 645 GT3e are significantly better than the Nvidia GeForce 9800M GT SLI.

The 645 GT3e was released over three years more recently than the 9800M GT, and so the 645 GT3e is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the 9800M GT when running the latest games.

The 9800M GT has 1024 MB video memory, but the 645 GT3e does not have an entry, so the two GPUs cannot be reliably compared in this area.

The 645 GT3e has 384 Shader Processing Units and the GeForce 9800M GT SLI has 192. However, the actual shader performance of the 645 GT3e is 442 and the actual shader performance of the 9800M GT is 96. The 645 GT3e having 346 better shader performance is not particularly notable, as altogether the 9800M GT performs better when taking into account other relevant data.

The 645 GT3e transistor size technology is 51 nm (nanometers) smaller than the 9800M GT. This means that the 645 GT3e is expected to run massively cooler and achieve higher clock frequencies than the 9800M GT.

The 645 GT3e requires 15 Watts to run and the GeForce 9800M GT SLI requires 130 Watts. The 9800M GT requires 115 Watts more than the 645 GT3e to run. The difference is significant enough that the 9800M GT may have an adverse affect on your yearly electricity bills in comparison to the 645 GT3e.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed300 MHzvs500 MHz
Boost Clock1150 MHzvs-
ArchitectureKaby LakeG92 (x2)
OC Potential - vs -
Driver Support - vs -
Release Date01 Jun 2019vs01 Jul 2008
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
green tick vs -
green tick vs -
green tick vs -
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GPU Memory

MemoryN/Avs1024 MB
Memory Speed-vs800 MHz
Memory Bus-vs512 Bit
Memory Type-vsGDDR3
Memory Bandwidth-vs102.4GB/sec
L2 Cache 0 KB green tick vs green tick 0 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units384vs192
Actual Shader Performance21%vs5%
Texture Mapping Units24vs-
Texture Rate7.2 GTexel/svs-
Render Output Units3vs-
Pixel Rate0.9 GPixel/svs-

GPU Outputs

Max Digital Resolution (WxH)-vs2560x1600
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections0vs-

GPU Power Requirements

Max Power15 Wattsvs130 Watts
Recommended PSU--

GPU Features

Shader Model6.4vs4.0
Open GL4.6vs2.1
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended Processor--
Recommended RAM8 GB-
Maximum Recommended Gaming Resolution1366x768-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Intel Iris Plus Graphics 645 GT3e are integrated graphics in some of Intel's Kaby Lake mobile processors. It can be found in Intel Core i5-8257U and the Intel Core i5-8557U

The Kaby Lake architecture succeeds the Skylake architecture and aims for increased CPU and graphics performance, via the same power requirements. It includes support for DirectX 12.1, OpenCL 2.1 and OpenGL 4.6.
The central unit initially runs at 300MHz and goes up to 1150MHz, in turbo mode in the Intel Core i5-8557U.

Because Performance depends heavily on the Memory Bandwidth, it may vary heavily from System to System.
Best case scenario, expect performance identical to a dedicated AMd HD 6790.
GeForce 9800M GT SLI is a solution of two GeForce 9800M GT put together using NVIDIA'S SLI technology.
Check the page of GeForce 9800M GT to know more about its chip.
As usual, SLI relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, up to X% better than a single GeForce 9800M GT performing by itself but at times (depending whether or not the 3D game supports SLI or in the graphics driver) it performed worse than a single GeForce 9800M GT.
A few demanding games will run at the highest settings with fluent frame rates (30+) but overall most games will require reduced settings to be played optimally.
Recommended CPU
Possible GPU Upgrades
GPU Variants