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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 6450 Sapphire OC 512MB Edition Radeon HD 3800 series
Cyberpunk 2077 1746% 1209%
Assassins Creed: Valhalla 1589% 1098%
Call of Duty: Black Ops Cold War 1534% 1059%
Watch Dogs Legion 1681% 1163%
Godfall 2898% 2026%
FIFA 21 831% 560%
Microsoft Flight Simulator 1534% 1059%
Grand Theft Auto VI 2498% 1742%
World of Warcraft: Shadowlands 2547% 1777%
Genshin Impact 1746% 1209%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 3800 series are significantly better than the AMD Radeon HD 6450 Sapphire OC 512MB Edition.

The HD 3800 has no core clock speed set, so any comparison between Texture and Pixel Fill Rates is not currently possible.

The HD 6450 was released over three years more recently than the HD 3800, and so the HD 6450 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 3800 when running the latest games.

The Radeon HD 6450 Sapphire OC 512MB Edition and the Radeon HD 3800 series have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The HD 6450 has 25.6 GB/sec greater memory bandwidth than the HD 3800, which means that the memory performance of the HD 6450 is slightly better than the HD 3800.

The Radeon HD 6450 Sapphire OC 512MB Edition has 160 Shader Processing Units and the Radeon HD 3800 series has 320. However, the actual shader performance of the HD 6450 is 60 and the actual shader performance of the HD 3800 is 0. The HD 6450 having 60 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 6450 delivers a slightly smoother and more efficient experience when processing graphical data than the HD 3800.

The HD 6450 transistor size technology is 15 nm (nanometers) smaller than the HD 3800. This means that the HD 6450 is expected to run slightly cooler and achieve higher clock frequencies than the HD 3800.

The Radeon HD 6450 Sapphire OC 512MB Edition requires 18 Watts to run but there is no entry for the Radeon HD 3800 series. We would recommend a PSU with at least 300 Watts for the HD 6450.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed750 MHzvs-
Boost Clock-vs-
ArchitectureTerascale 2 Caicos PRORV670
OC Potential Poor vs -
Driver Support Poor vs -
Release Date07 Apr 2011vs01 Nov 2007
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
green tick vs -
green tick vs -
3840x2160 - green tick vs green tick -

GPU Memory

Memory512 MBvs512 MB
Memory Speed800 MHzvs-
Memory Bus64 Bitvs256 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth25.6GB/secvs-
L2 Cache 128 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units160vs320
Actual Shader Performance3%vs-
Texture Mapping Units8vs16
Texture Rate6 GTexel/svs-
Render Output Units4vs16
Pixel Rate3 GPixel/svs-

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections1vs0
DVI Connections1vs0
HDMI Connections0vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power18 Watts-
Recommended PSU300 Watts & 22 Amps-

GPU Features

Shader Model5.0vs4.1
Open GL4.3vs3.2
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Celeron G440 1.6GHz-
Recommended RAM4 GB-
Maximum Recommended Gaming Resolution1366x768-

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.

Benchmarks indicate a 11% performance over the reference Radeon HD 6450.
Radeon HD 3800 Series is not a GPU but instead a combination between Radeon HD 3830, Radeon HD 3850 and Radeon HD 3870 whose rank is a balance between the three and that exists for System Requirements purposes only.
Recommended CPU
Possible GPU Upgrades
GPU Variants