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GeForce GTX 470 vs Radeon HD 6450 (OEM) 1GB

Intro

The GeForce GTX 470 features a core clock speed of 607 MHz and a GDDR5 memory speed of 837 MHz. It also uses a 320-bit bus, and uses a 40 nm design. It features 448 SPUs, 56 TAUs, and 40 Raster Operation Units.

Compare all that to the Radeon HD 6450 (OEM) 1GB, which features a clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 64-bit bus, and uses a 40 nm design. It features 160 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB 31 Watts
GeForce GTX 470 215 Watts
Difference: 184 Watts (594%)

Memory Bandwidth

In theory, the GeForce GTX 470 will be 365% faster than the Radeon HD 6450 (OEM) 1GB overall, due to its higher data rate. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 105120 (365%)

Texel Rate

The GeForce GTX 470 should be much (approximately 467%) better at AF than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 27992 (467%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 470 is a better choice, and very much so. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 21280 (709%)

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 470

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 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 470 Radeon HD 6450 (OEM) 1GB
Manufacturer nVidia AMD
Year March 2010 February 2011
Code Name GF100 Caicos
Memory 1280 MB 1024 MB
Core Speed 607 MHz 750 MHz
Memory Speed 3348 MHz 3600 MHz
Power (Max TDP) 215 watts 31 watts
Bandwidth 133920 MB/sec 28800 MB/sec
Texel Rate 33992 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 448 160
Texture Mapping Units 56 8
Render Output Units 40 4
Bus Type GDDR5 GDDR5
Bus Width 320-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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

Display Prices

Hide Prices

GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 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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