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GeForce GT 440 1.5GB vs Radeon HD 6570 (OEM) 1GB

Intro

The GeForce GT 440 1.5GB uses a 40 nm design. nVidia has set the core frequency at 594 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this particular card. It features 144 SPUs along with 24 TAUs and 24 ROPs.

Compare those specs to the Radeon HD 6570 (OEM) 1GB, which has core clock speeds of 650 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 480 SPUs as well as 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) 1GB 50 Watts
GeForce GT 440 1.5GB 56 Watts
Difference: 6 Watts (12%)

Memory Bandwidth

Performance-wise, the GeForce GT 440 1.5GB should in theory be much better than the Radeon HD 6570 (OEM) 1GB overall. (explain)

GeForce GT 440 1.5GB 43200 MB/sec
Radeon HD 6570 (OEM) 1GB 28800 MB/sec
Difference: 14400 (50%)

Texel Rate

The Radeon HD 6570 (OEM) 1GB is a little bit (about 9%) better at AF than the GeForce GT 440 1.5GB. (explain)

Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
GeForce GT 440 1.5GB 14256 Mtexels/sec
Difference: 1344 (9%)

Pixel Rate

The GeForce GT 440 1.5GB is much (more or less 174%) more effective at anti-aliasing than the Radeon HD 6570 (OEM) 1GB, and also capable of handling higher resolutions better. (explain)

GeForce GT 440 1.5GB 14256 Mpixels/sec
Radeon HD 6570 (OEM) 1GB 5200 Mpixels/sec
Difference: 9056 (174%)

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 GT 440 1.5GB

Amazon.com

Radeon HD 6570 (OEM) 1GB

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 GT 440 1.5GB Radeon HD 6570 (OEM) 1GB
Manufacturer nVidia AMD
Year October 2010 February 2011
Code Name GF106 Turks
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1536 MB 1024 MB
Core Speed 594 MHz 650 MHz
Shader Speed 1189 MHz (N/A) MHz
Memory Speed 900 MHz (1800 MHz effective) 900 MHz (1800 MHz effective)
Unified Shaders 144 480
Texture Mapping Units 24 24
Render Output Units 24 8
Bus Type GDDR3 GDDR3
Bus Width 192-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 56 watts 50 watts
Shader Model 5.0 5.0
Bandwidth 43200 MB/sec 28800 MB/sec
Texel Rate 14256 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 5200 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card 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 amount of colour ROPs by the the core clock speed. 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

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