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Radeon HD 6450 (OEM) 1GB vs Radeon R9 M265X

Intro

The Radeon HD 6450 (OEM) 1GB features a GPU clock speed of 750 MHz, and the 1024 MB of GDDR5 memory is set to run at 900 MHz through a 64-bit bus. It also is comprised of 160 SPUs, 8 Texture Address Units, and 4 ROPs.

Compare all that to the Radeon R9 M265X, which has core speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M265X should perform a lot faster than the Radeon HD 6450 (OEM) 1GB overall. (explain)

Radeon R9 M265X 72000 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 43200 (150%)

Texel Rate

The Radeon R9 M265X is a lot (approximately 283%) better at texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R9 M265X 23000 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 17000 (283%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M265X is a better choice, by far. (explain)

Radeon R9 M265X 9200 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 6200 (207%)

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) 1GB

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) 1GB Radeon R9 M265X
Manufacturer AMD AMD
Year February 2011 May 1 2014
Code Name Caicos Venus Pro
Memory 1024 MB 2048 MB
Core Speed 750 MHz 575 MHz
Memory Speed 3600 MHz 4500 MHz
Power (Max TDP) 31 watts (Unknown) watts
Bandwidth 28800 MB/sec 72000 MB/sec
Texel Rate 6000 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 3000 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 160 640
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type GDDR5 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: Bandwidth is the largest amount of data (in units of MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6450 (OEM) 1GB

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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