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Radeon HD 4670 1GB vs Radeon R9 M265X

Intro

The Radeon HD 4670 1GB has a GPU clock speed of 750 MHz, and the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 memory runs at 1100 MHz through a 128-bit bus. It also is made up of 320(64x5) Stream Processors, 32 TAUs, and 8 Raster Operation Units.

Compare those specifications to the Radeon R9 M265X, which uses a 28 nm design. AMD has clocked the core speed at 575 MHz. The GDDR5 RAM works at a speed of 1125 MHz on this specific model. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M265X should theoretically be a lot better than the Radeon HD 4670 1GB overall. (explain)

Radeon R9 M265X 72000 MB/sec
Radeon HD 4670 1GB 35200 MB/sec
Difference: 36800 (105%)

Texel Rate

The Radeon HD 4670 1GB should be just a bit (more or less 4%) faster with regards to texture filtering than the Radeon R9 M265X. (explain)

Radeon HD 4670 1GB 24000 Mtexels/sec
Radeon R9 M265X 23000 Mtexels/sec
Difference: 1000 (4%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M265X is superior to the Radeon HD 4670 1GB, by a large margin. (explain)

Radeon R9 M265X 9200 Mpixels/sec
Radeon HD 4670 1GB 6000 Mpixels/sec
Difference: 3200 (53%)

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 4670 1GB

Amazon.com

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Radeon R9 M265X

Amazon.com

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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 4670 1GB Radeon R9 M265X
Manufacturer AMD AMD
Year Sep 10, 2008 May 1 2014
Code Name RV730 XT Venus Pro
Memory 1024 MB 2048 MB
Core Speed 750 MHz 575 MHz
Memory Speed 2200 MHz 4500 MHz
Power (Max TDP) 70 watts (Unknown) watts
Bandwidth 35200 MB/sec 72000 MB/sec
Texel Rate 24000 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 6000 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 320(64x5) 640
Texture Mapping Units 32 40
Render Output Units 8 16
Bus Type GDDR4/GDDR3/DDR3/DDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 514 million (Unknown) million
Bus PCIe 2.0 x16, AGP 8x PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 processed in one second. This figure is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's 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, most notably 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 4670 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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