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GeForce GTX Titan vs Radeon HD 7950 3GB

Intro

The GeForce GTX Titan has a clock frequency of 837 MHz and a GDDR5 memory frequency of 1502 MHz. It also uses a 384-bit bus, and uses a 28 nm design. It is comprised of 2688 SPUs, 224 TAUs, and 48 ROPs.

Compare those specs to the Radeon HD 7950 3GB, which features a core clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 384-bit memory bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB 200 Watts
GeForce GTX Titan 250 Watts
Difference: 50 Watts (25%)

Memory Bandwidth

Performance-wise, the GeForce GTX Titan should theoretically be a little bit better than the Radeon HD 7950 3GB overall. (explain)

GeForce GTX Titan 288384 MB/sec
Radeon HD 7950 3GB 240000 MB/sec
Difference: 48384 (20%)

Texel Rate

The GeForce GTX Titan will be quite a bit (approximately 109%) more effective at texture filtering than the Radeon HD 7950 3GB. (explain)

GeForce GTX Titan 187488 Mtexels/sec
Radeon HD 7950 3GB 89600 Mtexels/sec
Difference: 97888 (109%)

Pixel Rate

The GeForce GTX Titan should be much (approximately 57%) better at anti-aliasing than the Radeon HD 7950 3GB, and also able to handle higher resolutions better. (explain)

GeForce GTX Titan 40176 Mpixels/sec
Radeon HD 7950 3GB 25600 Mpixels/sec
Difference: 14576 (57%)

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 Titan

Amazon.com

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Radeon HD 7950 3GB

Amazon.com

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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 Titan Radeon HD 7950 3GB
Manufacturer nVidia AMD
Year February 2013 January 2012
Code Name GK110 Tahiti Pro
Memory 6144 MB 3072 MB
Core Speed 837 MHz 800 MHz
Memory Speed 6008 MHz 5000 MHz
Power (Max TDP) 250 watts 200 watts
Bandwidth 288384 MB/sec 240000 MB/sec
Texel Rate 187488 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 40176 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 2688 1792
Texture Mapping Units 224 112
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 7080 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be moved across the external memory interface in a second. The number is 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 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX Titan

Amazon.com

Check prices at:

Radeon HD 7950 3GB

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.

Comments

One Response to “GeForce GTX Titan vs Radeon HD 7950 3GB”
Anonymous says:

You need to check your info on some of these

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