GeForce 9500 GT 1GB GDDR3 vs Radeon HD 4650 1GB

Intro

Compare those specs to the Radeon HD 4650 1GB, which uses a 55 nm design. AMD has clocked the core frequency at 600 MHz. The GDDR3 RAM works at a speed of 700 MHz on this particular model. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 1GB GDDR3		50 Watts
Radeon HD 4650 1GB		55 Watts
	Difference: 5 Watts (10%)

Memory Bandwidth

Theoretically speaking, the GeForce 9500 GT 1GB GDDR3 should be 14% quicker than the Radeon HD 4650 1GB in general, due to its higher data rate. (explain)

GeForce 9500 GT 1GB GDDR3		25600 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 3200 (14%)

Texel Rate

The Radeon HD 4650 1GB will be quite a bit (approximately 118%) better at anisotropic filtering than the GeForce 9500 GT 1GB GDDR3. (explain)

Radeon HD 4650 1GB		19200 Mtexels/sec
GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
	Difference: 10400 (118%)

Pixel Rate

The Radeon HD 4650 1GB is just a bit (more or less 9%) faster with regards to full screen anti-aliasing than the GeForce 9500 GT 1GB GDDR3, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 4650 1GB		4800 Mpixels/sec
GeForce 9500 GT 1GB GDDR3		4400 Mpixels/sec
	Difference: 400 (9%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported over 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, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units by the core 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 in one second.

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