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Radeon HD 6450 (OEM) vs Radeon R9 M265X

Intro

The Radeon HD 6450 (OEM) comes with a GPU core clock speed of 625 MHz, and the 512 MB of GDDR3 memory is set to run at 800 MHz through a 64-bit bus. It also is comprised of 160 Stream Processors, 8 TAUs, and 4 ROPs.

Compare all that to the Radeon R9 M265X, which has a clock frequency of 575 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M265X, in theory, should perform much faster than the Radeon HD 6450 (OEM) overall. (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 quite a bit (more or less 360%) faster with regards to 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

The Radeon R9 M265X is a lot (approximately 268%) better at FSAA than the Radeon HD 6450 (OEM), and also able to handle higher screen resolutions better. (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 (counted in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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