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Radeon HD 6450 (OEM) vs Radeon R9 M265X

Intro

The Radeon HD 6450 (OEM) uses a 40 nm design. AMD has set the core frequency at 625 MHz. The GDDR3 RAM works at a speed of 800 MHz on this particular model. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M265X, which features a core clock speed of 575 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M265X should perform much faster than the Radeon HD 6450 (OEM) in general. (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 (approximately 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 will be much (approximately 268%) better at full screen anti-aliasing than the Radeon HD 6450 (OEM), and also will be able to handle higher screen resolutions without losing too much performance. (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 largest amount of information (measured in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum 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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