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GeForce GTX 470 vs Radeon HD 6570 (OEM) 2GB

Intro

The GeForce GTX 470 comes with a GPU core clock speed of 607 MHz, and the 1280 MB of GDDR5 RAM runs at 837 MHz through a 320-bit bus. It also features 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Compare all that to the Radeon HD 6570 (OEM) 2GB, which features clock speeds of 650 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
GeForce GTX 470 215 Watts
Difference: 165 Watts (330%)

Memory Bandwidth

Performance-wise, the GeForce GTX 470 should in theory be quite a bit superior to the Radeon HD 6570 (OEM) 2GB in general. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Difference: 69920 (109%)

Texel Rate

The GeForce GTX 470 will be a lot (about 118%) more effective at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 18392 (118%)

Pixel Rate

The GeForce GTX 470 is quite a bit (about 367%) faster with regards to full screen anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 19080 (367%)

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 470

Amazon.com

Radeon HD 6570 (OEM) 2GB

Amazon.com

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

Model GeForce GTX 470 Radeon HD 6570 (OEM) 2GB
Manufacturer nVidia AMD
Year March 2010 February 2011
Code Name GF100 Turks
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1280 MB 1024 MB
Core Speed 607 MHz 650 MHz
Shader Speed 1215 MHz (N/A) MHz
Memory Speed 837 MHz (3348 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 448 480
Texture Mapping Units 56 24
Render Output Units 40 8
Bus Type GDDR5 GDDR5
Bus Width 320-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 215 watts 50 watts
Shader Model 5.0 5.0
Bandwidth 133920 MB/sec 64000 MB/sec
Texel Rate 33992 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 5200 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 can be applied 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 the texel rate, the better the 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 amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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