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Radeon HD 4670 512MB vs Radeon R7 M265

Intro

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

Compare those specs to the Radeon R7 M265, which features GPU core speed of 725 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 128-bit bus. It also is made up of 384 SPUs, 24 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Both cards have the exact same memory bandwidth, so in theory they should have the same performance. (explain)

Texel Rate

The Radeon HD 4670 512MB is much (approximately 38%) better at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 4670 512MB 24000 Mtexels/sec
Radeon R7 M265 17400 Mtexels/sec
Difference: 6600 (38%)

Pixel Rate

The Radeon HD 4670 512MB is a small bit (about 3%) faster with regards to full screen anti-aliasing than the Radeon R7 M265, and able to handle higher resolutions more effectively. (explain)

Radeon HD 4670 512MB 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 512MB

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.

Specifications

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Model Radeon HD 4670 512MB Radeon R7 M265
Manufacturer AMD AMD
Year Sep 10, 2008 May 1 2014
Code Name RV730 XT Opal XT
Memory 512 MB 2048 MB
Core Speed 750 MHz 725 MHz
Memory Speed 2000 MHz 2000 MHz
Power (Max TDP) 70 watts (Unknown) watts
Bandwidth 32000 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 (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4670 512MB

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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