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GeForce GTX 950 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 950 has a GPU core speed of 1024 MHz, and the 2048 MB of GDDR5 RAM is set to run at 1652 MHz through a 128-bit bus. It also features 768 Stream Processors, 48 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 4870 1GB, which uses a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this particular card. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950 90 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 60 Watts (67%)

Memory Bandwidth

In theory, the Radeon HD 4870 1GB is 9% faster than the GeForce GTX 950 overall, because of its greater data rate. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GTX 950 105728 MB/sec
Difference: 9472 (9%)

Texel Rate

The GeForce GTX 950 should be quite a bit (about 64%) better at anisotropic filtering than the Radeon HD 4870 1GB. (explain)

GeForce GTX 950 49152 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 19152 (64%)

Pixel Rate

The GeForce GTX 950 should be quite a bit (about 173%) better at full screen anti-aliasing than the Radeon HD 4870 1GB, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 950 32768 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 20768 (173%)

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 950

Amazon.com

Check prices at:

Radeon HD 4870 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 GTX 950 Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year August 2015 Jun 25, 2008
Code Name GM206 RV770 XT
Memory 2048 MB 1024 MB
Core Speed 1024 MHz 750 MHz
Memory Speed 6608 MHz 3600 MHz
Power (Max TDP) 90 watts 150 watts
Bandwidth 105728 MB/sec 115200 MB/sec
Texel Rate 49152 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 32768 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 768 800(160x5)
Texture Mapping Units 48 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors 2940 million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12.0 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of 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 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 by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 950

Amazon.com

Check prices at:

Radeon HD 4870 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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