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Radeon HD 4670 1GB vs Radeon R7 M265

Intro

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

Compare those specs to the Radeon R7 M265, which features a core clock speed of 725 MHz and a DDR3 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4670 1GB should be a little bit faster than the Radeon R7 M265 in general. (explain)

Radeon HD 4670 1GB 35200 MB/sec
Radeon R7 M265 32000 MB/sec
Difference: 3200 (10%)

Texel Rate

The Radeon HD 4670 1GB should be a lot (about 38%) more effective at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 4670 1GB 24000 Mtexels/sec
Radeon R7 M265 17400 Mtexels/sec
Difference: 6600 (38%)

Pixel Rate

The Radeon HD 4670 1GB is a little bit (more or less 3%) more effective at AA than the Radeon R7 M265, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 4670 1GB 6000 Mpixels/sec
Radeon R7 M265 5800 Mpixels/sec
Difference: 200 (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 1GB

Amazon.com

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Radeon R7 M265

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 R7 M265
Manufacturer AMD AMD
Year Sep 10, 2008 May 1 2014
Code Name RV730 XT Opal XT
Memory 1024 MB 2048 MB
Core Speed 750 MHz 725 MHz
Memory Speed 2200 MHz 2000 MHz
Power (Max TDP) 70 watts (Unknown) watts
Bandwidth 35200 MB/sec 32000 MB/sec
Texel Rate 24000 Mtexels/sec 17400 Mtexels/sec
Pixel Rate 6000 Mpixels/sec 5800 Mpixels/sec
Unified Shaders 320(64x5) 384
Texture Mapping Units 32 24
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 (Unknown) million
Bus PCIe 2.0 x16, AGP 8x PCIe 3.0 x8
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the 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 R7 M265

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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