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GeForce GTX Titan vs Radeon HD 5870


Intro

The GeForce GTX Titan features clock speeds of 837 MHz on the GPU, and 1502 MHz on the 6144 MB of GDDR5 RAM. It features 2688 SPUs as well as 224 Texture Address Units and 48 ROPs.

Compare all of that to the Radeon HD 5870, which makes use of a 40 nm design. AMD has set the core speed at 850 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this particular model. It features 1600(320x5) SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
GeForce GTX Titan 250 Watts
Difference: 62 Watts (33%)

Memory Bandwidth

The GeForce GTX Titan should in theory perform much faster than the Radeon HD 5870 overall. (explain)

GeForce GTX Titan 288384 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 134784 (88%)

Texel Rate

The GeForce GTX Titan is a lot (about 176%) better at texture filtering than the Radeon HD 5870. (explain)

GeForce GTX Titan 187488 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 119488 (176%)

Pixel Rate

The GeForce GTX Titan will be a lot (approximately 48%) more effective at anti-aliasing than the Radeon HD 5870, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX Titan 40176 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 12976 (48%)

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

GeForce GTX Titan

Radeon HD 5870

Specifications

Display Specifications

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Model GeForce GTX Titan Radeon HD 5870
Manufacturer nVidia AMD
Year February 2013 September 23, 2009
Code Name GK110 Cypress XT
Memory 6144 MB 1024 MB
Core Speed 837 MHz 850 MHz
Memory Speed 6008 MHz 4800 MHz
Power (Max TDP) 250 watts 188 watts
Bandwidth 288384 MB/sec 153600 MB/sec
Texel Rate 187488 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 40176 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 2688 1600(320x5)
Texture Mapping Units 224 80
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 7080 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

GeForce GTX Titan

Radeon HD 5870

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