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

Intro

The GeForce GTX 470 uses a 40 nm design. nVidia has clocked the core frequency at 607 MHz. The GDDR5 RAM runs at a speed of 837 MHz on this specific model. It features 448 SPUs as well as 56 Texture Address Units and 40 Rasterization Operator Units.

Compare that to the Radeon HD 6450 (OEM) 1GB, which comes with a core clock speed of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 64-bit bus, and uses a 40 nm design. It is comprised of 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 should perform much faster than the Radeon HD 6450 (OEM) 1GB overall. (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 a lot (approximately 467%) more effective at anisotropic filtering 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

The GeForce GTX 470 is a lot (more or less 709%) better at AA than the Radeon HD 6450 (OEM) 1GB, and also will be able to handle higher resolutions more effectively. (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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to 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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