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GeForce GTX 950M vs Radeon HD 4770

Intro

The GeForce GTX 950M uses a 28 nm design. nVidia has set the core frequency at 914 MHz. The DDR3 RAM runs at a speed of 1000 MHz on this specific model. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Compare that to the Radeon HD 4770, which features core speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M 55 Watts
Radeon HD 4770 80 Watts
Difference: 25 Watts (45%)

Memory Bandwidth

The Radeon HD 4770, in theory, should be a lot faster than the GeForce GTX 950M in general. (explain)

Radeon HD 4770 51200 MB/sec
GeForce GTX 950M 32000 MB/sec
Difference: 19200 (60%)

Texel Rate

The GeForce GTX 950M is much (more or less 52%) more effective at anisotropic filtering than the Radeon HD 4770. (explain)

GeForce GTX 950M 36560 Mtexels/sec
Radeon HD 4770 24000 Mtexels/sec
Difference: 12560 (52%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 950M is a better choice, by a large margin. (explain)

GeForce GTX 950M 14624 Mpixels/sec
Radeon HD 4770 12000 Mpixels/sec
Difference: 2624 (22%)

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 4770

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 4770
Manufacturer nVidia AMD
Year March 12 2015 Apr 28, 2009
Code Name GM107 RV740
Memory 2048 MB 512 MB
Core Speed 914 MHz 750 MHz
Memory Speed 2000 MHz 3200 MHz
Power (Max TDP) 55 watts 80 watts
Bandwidth 32000 MB/sec 51200 MB/sec
Texel Rate 36560 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 14624 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 640 640(128x5)
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type DDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 826 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 950M

Amazon.com

Check prices at:

Radeon HD 4770

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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