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GeForce 940M vs Radeon HD 4670 1GB

Intro

The GeForce 940M has a GPU clock speed of 1072 MHz, and the 2048 MB of DDR3 RAM runs at 1000 MHz through a 64-bit bus. It also is comprised of 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the Radeon HD 4670 1GB, which comes with a clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1100 MHz. It also features a 128-bit bus, and makes use of a 55 nm design. It features 320(64x5) SPUs, 32 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4670 1GB should be a lot faster than the GeForce 940M overall. (explain)

Radeon HD 4670 1GB 35200 MB/sec
GeForce 940M 16000 MB/sec
Difference: 19200 (120%)

Texel Rate

The GeForce 940M will be just a bit (approximately 7%) faster with regards to anisotropic filtering than the Radeon HD 4670 1GB. (explain)

GeForce 940M 25728 Mtexels/sec
Radeon HD 4670 1GB 24000 Mtexels/sec
Difference: 1728 (7%)

Pixel Rate

The GeForce 940M will be a lot (more or less 43%) better at AA than the Radeon HD 4670 1GB, and will be capable of handling higher resolutions more effectively. (explain)

GeForce 940M 8576 Mpixels/sec
Radeon HD 4670 1GB 6000 Mpixels/sec
Difference: 2576 (43%)

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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GeForce 940M

Amazon.com

Check prices at:

Radeon HD 4670 1GB

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 GeForce 940M Radeon HD 4670 1GB
Manufacturer nVidia AMD
Year March 12 2015 Sep 10, 2008
Code Name GM108 RV730 XT
Memory 2048 MB 1024 MB
Core Speed 1072 MHz 750 MHz
Memory Speed 2000 MHz 2200 MHz
Power (Max TDP) (Unknown) watts 70 watts
Bandwidth 16000 MB/sec 35200 MB/sec
Texel Rate 25728 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 384 320(64x5)
Texture Mapping Units 24 32
Render Output Units 8 8
Bus Type DDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 514 million
Bus PCIe 3.0 x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 940M

Amazon.com

Check prices at:

Radeon HD 4670 1GB

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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