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Radeon HD 6450 (OEM) vs Radeon R9 M265X

Intro

The Radeon HD 6450 (OEM) has core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Compare that to the Radeon R9 M265X, which features GPU core speed of 575 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M265X should be 463% faster than the Radeon HD 6450 (OEM) overall, due to its higher bandwidth. (explain)

Radeon R9 M265X 72000 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 59200 (463%)

Texel Rate

The Radeon R9 M265X will be a lot (about 360%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 M265X 23000 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 18000 (360%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M265X is superior to the Radeon HD 6450 (OEM), by a large margin. (explain)

Radeon R9 M265X 9200 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 6700 (268%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon HD 6450 (OEM)

Amazon.com

Check prices at:

Radeon R9 M265X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 6450 (OEM) Radeon R9 M265X
Manufacturer AMD AMD
Year February 2011 May 1 2014
Code Name Caicos Venus Pro
Memory 512 MB 2048 MB
Core Speed 625 MHz 575 MHz
Memory Speed 1600 MHz 4500 MHz
Power (Max TDP) 31 watts (Unknown) watts
Bandwidth 12800 MB/sec 72000 MB/sec
Texel Rate 5000 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 2500 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 160 640
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 64-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 370 million (Unknown) million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 6450 (OEM)

Amazon.com

Check prices at:

Radeon R9 M265X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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