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Radeon HD 4670 512MB vs Radeon R7 240

Intro

The Radeon HD 4670 512MB features a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also features a 128-bit memory bus, and makes use of a 55 nm design. It features 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Compare that to the Radeon R7 240, which has GPU core speed of 730 MHz, and 2048 MB of DDR3 memory set to run at 900 MHz through a 128-bit bus. It also is comprised of 320 Stream Processors, 20 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240 30 Watts
Radeon HD 4670 512MB 70 Watts
Difference: 40 Watts (133%)

Memory Bandwidth

The Radeon HD 4670 512MB should theoretically be a little bit faster than the Radeon R7 240 overall. (explain)

Radeon HD 4670 512MB 32000 MB/sec
Radeon R7 240 28800 MB/sec
Difference: 3200 (11%)

Texel Rate

The Radeon HD 4670 512MB should be much (more or less 64%) faster with regards to anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 4670 512MB 24000 Mtexels/sec
Radeon R7 240 14600 Mtexels/sec
Difference: 9400 (64%)

Pixel Rate

The Radeon HD 4670 512MB is a bit (more or less 3%) better at FSAA than the Radeon R7 240, and also capable of handling higher resolutions better. (explain)

Radeon HD 4670 512MB 6000 Mpixels/sec
Radeon R7 240 5840 Mpixels/sec
Difference: 160 (3%)

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 512MB

Amazon.com

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Radeon R7 240

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 512MB Radeon R7 240
Manufacturer AMD AMD
Year Sep 10, 2008 October 2013
Code Name RV730 XT Oland PRO
Memory 512 MB 2048 MB
Core Speed 750 MHz 730 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 70 watts 30 watts
Bandwidth 32000 MB/sec 28800 MB/sec
Texel Rate 24000 Mtexels/sec 14600 Mtexels/sec
Pixel Rate 6000 Mpixels/sec 5840 Mpixels/sec
Unified Shaders 320(64x5) 320
Texture Mapping Units 32 20
Render Output Units 8 8
Bus Type GDDR4/GDDR3/DDR3/DDR2 DDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 514 million 1040 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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 4670 512MB

Amazon.com

Check prices at:

Radeon R7 240

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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