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GeForce GTS 450 1GB vs Radeon HD 6450 (OEM)

Intro

The GeForce GTS 450 1GB features a clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare all that to the Radeon HD 6450 (OEM), which uses a 40 nm design. AMD has clocked the core speed at 625 MHz. The GDDR3 RAM works at a frequency of 800 MHz on this card. It features 160 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 75 Watts (242%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 1GB will be 351% quicker than the Radeon HD 6450 (OEM) overall, because of its higher data rate. (explain)

GeForce GTS 450 1GB 57728 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 44928 (351%)

Texel Rate

The GeForce GTS 450 1GB is much (approximately 401%) more effective at AF than the Radeon HD 6450 (OEM). (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 20056 (401%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTS 450 1GB is superior to the Radeon HD 6450 (OEM), by a large margin. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 10028 (401%)

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 GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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 GTS 450 1GB Radeon HD 6450 (OEM)
Manufacturer nVidia AMD
Year September 2010 February 2011
Code Name GF106 Caicos
Memory 1024 MB 512 MB
Core Speed 783 MHz 625 MHz
Memory Speed 3608 MHz 1600 MHz
Power (Max TDP) 106 watts 31 watts
Bandwidth 57728 MB/sec 12800 MB/sec
Texel Rate 25056 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 192 160
Texture Mapping Units 32 8
Render Output Units 16 4
Bus Type GDDR5 GDDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 1170 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 maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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