Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game HD i7 6700K GeForce GT 640 EVGA 4GB Edition
Red Dead Redemption 2 664% 529%
Call of Duty: Modern Warfare 664% 529%
Halo: Reach 143% 100%
Star Wars: Jedi - Fallen Order 950% 765%
Cyberpunk 2077 950% 765%
Borderlands 3 707% 565%
FIFA 20 307% 235%
Halo: The Master Chief Collection 780% 625%
Fortnite: Chapter 2 250% 188%
eFootball PES 2020 421% 329%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 EVGA 4GB Edition are noticeably better than the Intel HD i7 6700K.

The GT 640 has a 551 MHz higher core clock speed and 16 more Texture Mapping Units than the HD i7 6700K. This results in the GT 640 providing 23.2 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 640 has a 551 MHz higher core clock speed and 8 more Render Output Units than the HD i7 6700K. This results in the GT 640 providing 11.6 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The HD i7 6700K was released over three years more recently than the GT 640, and so the HD i7 6700K is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GT 640 when running the latest games.

The GT 640 has 4096 MB video memory, but the HD i7 6700K does not have an entry, so the two GPUs cannot be reliably compared in this area.

The HD i7 6700K has 24 Shader Processing Units and the GeForce GT 640 EVGA 4GB Edition has 384. However, the actual shader performance of the HD i7 6700K is 221 and the actual shader performance of the GT 640 is 346. The GT 640 having 125 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 640 delivers a marginally smoother and more efficient experience when processing graphical data than the HD i7 6700K.

The HD i7 6700K transistor size technology is 14 nm (nanometers) smaller than the GT 640. This means that the HD i7 6700K is expected to run slightly cooler and achieve higher clock frequencies than the GT 640.

The HD i7 6700K requires 91 Watts to run and the GeForce GT 640 EVGA 4GB Edition requires 65 Watts. We would recommend a PSU with at least 300 Watts for the HD i7 6700K and a PSU with at least 350 Watts for the GT 640. The HD i7 6700K requires 26 Watts more than the GT 640 to run. The difference is not significant enough for the HD i7 6700K to have a noticeably larger impact on your yearly electricity bills than the GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed350 MHzvs901 MHz
Boost Clock1150 MHzvs-
ArchitectureSkylake GT2-R0Kepler GK107-300-A2
OC Potential None vs Fair
Driver Support Great vs Good
Release Date05 Aug 2015vs08 Jun 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
6.4
green tick vs -
1600x900
4.9
vs green tick
5.2
1920x1080
3.4
vs green tick
3.9
2560x1440
2.3
vs green tick
2.6
3840x2160
1.6
vs green tick
1.8

GPU Memory

MemoryN/Avs4096 MB
Memory Speed1067 MHzvs667 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR4vsDDR3
Memory Bandwidth34.1GB/secvs21.3GB/sec
L2 Cache 1024 KB green tick vs 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units24vs384
Actual Shader Performance11%vs17%
Technology14nmvs28nm
Texture Mapping Units16vs32
Texture Rate5.6 GTexel/svs28.8 GTexel/s
Render Output Units8vs16
Pixel Rate2.8 GPixel/svs14.4 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections0vs2
HDMI Connections0vs1
DisplayPort Connections0vs-
Comparison

GPU Power Requirements

Max Power91 Wattsvs65 Watts
Recommended PSU300 Watts & 20 Ampsvs350 Watts & 26 Amps

GPU Features

DirectX12.1vs12.0
Shader Model5.0vs5.0
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsno
Dedicatednovsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-6700K 4-Core 4.0GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Intel HD i7 6700K is the specific version of Intel HD Graphics 530 Desktop that is integrated in the Core i7-6700K Processor.

Architecture
The Skylake Core includes support for DirectX 12.1, OpenCL 2.0 and OpenGL 4.4. Additionally, it also supports DDR4 Memory.

GPU
It equips a GPU Codenamed GT2 which offers 24 Shader Processing Units, 16 TMUs and 8 ROPs. The Central Unit Initially Runs at 350MHz and goes up to 1150MHz, in Turbo Mode.

Memory
The GPU Shares the System's RAM which varies from laptop to laptop. Typically, the GPU reserves 1.7GB. Depending on whether or not the system's RAM is Dual-Channeled, it can access either a 64-bit or 128-bit memory interface. The operating memory clock also depends on the at which speed the System's RAM is running and is limited by the highest operating speed that the Processor supports. In this case, it is 1067MHz.
It is then obvious the Memory Bandwidth depends on a lot of factors and thus this Graphics Card performance may vary heavily from system to system.

Performance
Gaming benchmarks put its performance almost on level with a dedicated GeForce 920M.

System Suggestions
Intel HD i7 6700K is best suited for resolutions up to and including 1366x768. We recommend a Decent Processor and 4GB of RAM for Optimal Performance.
Overview
GeForce GT 640 EVGA 4GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 640, created by EVGA.

Overclock: Central Unit
The Central Unit runs at the same speed.

Overclock: Memory Clock
The Operating Memory Clock is now of 667MHz while the Frame Buffer was doubled to 4GB. This is a gimmick and in no way benefits the GPU.

Cooling Solution
The Cooling System remains the same.

Performance
Without Overclocking Out of The Box, GeForce GT 640 EVGA 4GB Edition is as fast as the reference GeForce GT 640.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
-

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