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GeForce GTX 950M vs Radeon HD 4670 512MB

Intro

The GeForce GTX 950M makes use of a 28 nm design. nVidia has set the core frequency at 914 MHz. The DDR3 memory works at a frequency of 1000 MHz on this specific card. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 4670 512MB, which features a GPU core clock speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory running at 1000 MHz through a 128-bit bus. It also features 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M 55 Watts
Radeon HD 4670 512MB 70 Watts
Difference: 15 Watts (27%)

Memory Bandwidth

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

Texel Rate

The GeForce GTX 950M will be a lot (approximately 52%) more effective at anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 950M 36560 Mtexels/sec
Radeon HD 4670 512MB 24000 Mtexels/sec
Difference: 12560 (52%)

Pixel Rate

The GeForce GTX 950M should be a lot (approximately 144%) more effective at FSAA than the Radeon HD 4670 512MB, and also will be capable of handling higher resolutions better. (explain)

GeForce GTX 950M 14624 Mpixels/sec
Radeon HD 4670 512MB 6000 Mpixels/sec
Difference: 8624 (144%)

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 GTX 950M

Amazon.com

Check prices at:

Radeon HD 4670 512MB

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 GTX 950M Radeon HD 4670 512MB
Manufacturer nVidia AMD
Year March 12 2015 Sep 10, 2008
Code Name GM107 RV730 XT
Memory 2048 MB 512 MB
Core Speed 914 MHz 750 MHz
Memory Speed 2000 MHz 2000 MHz
Power (Max TDP) 55 watts 70 watts
Bandwidth 32000 MB/sec 32000 MB/sec
Texel Rate 36560 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 14624 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 640 320(64x5)
Texture Mapping Units 40 32
Render Output Units 16 8
Bus Type DDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 128-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 largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 950M

Amazon.com

Check prices at:

Radeon HD 4670 512MB

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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