Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 6450 Sapphire OC 512MB Edition GeForce GTX 650 Gigabyte OC 1GB Edition
Cyberpunk 2077 1746% 372%
Assassins Creed: Valhalla 1589% 332%
Call of Duty: Black Ops Cold War 1534% 318%
Watch Dogs Legion 1681% 356%
FIFA 21 831% 138%
Microsoft Flight Simulator 1534% 318%
Godfall 2898% 667%
Grand Theft Auto VI 2498% 565%
World of Warcraft: Shadowlands 2547% 577%
Genshin Impact 1746% 372%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 650 Gigabyte OC 1GB Edition are massively better than the AMD Radeon HD 6450 Sapphire OC 512MB Edition.

The GTX 650 has a 360 MHz higher core clock speed and 24 more Texture Mapping Units than the HD 6450. This results in the GTX 650 providing 29.5 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 GTX 650 has a 360 MHz higher core clock speed and 12 more Render Output Units than the HD 6450. This results in the GTX 650 providing 14.8 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 GTX 650 was released over a year more recently than the HD 6450, and so the GTX 650 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 6450.

The GTX 650 has 512 MB more video memory than the HD 6450, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 650 also has superior memory performance overall.

The GTX 650 has 54.4 GB/sec greater memory bandwidth than the HD 6450, which means that the memory performance of the GTX 650 is much better than the HD 6450.

The Radeon HD 6450 Sapphire OC 512MB Edition has 160 Shader Processing Units and the GeForce GTX 650 Gigabyte OC 1GB Edition has 384. However, the actual shader performance of the HD 6450 is 60 and the actual shader performance of the GTX 650 is 426. The GTX 650 having 366 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 650 delivers a massively smoother and more efficient experience when processing graphical data than the HD 6450.

The GTX 650 transistor size technology is 12 nm (nanometers) smaller than the HD 6450. This means that the GTX 650 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6450.

The Radeon HD 6450 Sapphire OC 512MB Edition requires 18 Watts to run but there is no entry for the GeForce GTX 650 Gigabyte OC 1GB Edition. We would recommend a PSU with at least 300 Watts for the HD 6450 and a PSU with at least 400 Watts for the GTX 650. The GTX 650 has been recommended a PSU with 100 Watts more than the HD 6450. The difference is significant enough that the GTX 650 may have an adverse affect on your yearly electricity bills in comparison to the HD 6450.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed750 MHzvs1110 MHz
Boost Clock-vs-
ArchitectureTerascale 2 Caicos PROKepler GK107-450-A2
OC Potential Poor vs Poor
Driver Support Poor vs Good
Release Date07 Apr 2011vs01 Sep 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
2.7
vs green tick
5.9
1920x1080
2.1
vs green tick
4.9
2560x1440
1.5
vs green tick
3.1
3840x2160 - vs green tick
2.1

GPU Memory

Memory512 MBvs1024 MB
Memory Speed800 MHzvs1250 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth25.6GB/secvs80GB/sec
L2 Cache 128 KB vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units160vs384
Actual Shader Performance3%vs21%
Technology40nmvs28nm
Texture Mapping Units8vs32
Texture Rate6 GTexel/svs35.5 GTexel/s
Render Output Units4vs16
Pixel Rate3 GPixel/svs17.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs1
DVI Connections1vs2
HDMI Connections0vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power18 Watts-
Recommended PSU300 Watts & 22 Ampsvs400 Watts & 33 Amps

GPU Features

DirectX11.0vs12.0
Shader Model5.0vs5.0
Open GL4.3vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Celeron G440 1.6GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 6450 Sapphire OC 512MB Edition is a special edition of AMD's Entry-Level Radeon HD 6450, created by Sapphire.

Overclock: Central Unit
The Central Unit now runs at 750MHz, instead of 625MHz.

Overclock: Memory Clock
The Operating Memory Clock and the Frame Buffer both remain the same.

Cooling Solution
The Cooling System remains the same.

Performance
Benchmarks indicate a 11% performance over the reference Radeon HD 6450.
GeForce GTX 650 Gigabyte OC 1GB Edition is a special edition of the fast-middle-class GeForce GTX 650 1GB.
This special edition comes overclocked out of the box to 1110MHz and features a custom-designed 10 cm cooler.
Benchmarks indicate a 4% performance boost when compared to the reference card and so this GPU is suitable for medium to high settings on most demanding games but not with extreme resolutions.
Recommended CPU
Possible GPU Upgrades
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GPU Variants
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