Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GT 315 vs GeForce GT 420

Intro

The GeForce GT 315 has a core clock frequency of 625 MHz and a DDR3 memory frequency of 790 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 48 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare those specifications to the GeForce GT 420, which comes with GPU core speed of 700 MHz, and 2048 MB of GDDR3 RAM set to run at 900 MHz through a 128-bit bus. It also is made up of 48 Stream Processors, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420 50 Watts
GeForce GT 315 52 Watts
Difference: 2 Watts (4%)

Memory Bandwidth

The GeForce GT 420, in theory, should perform just a bit faster than the GeForce GT 315 overall. (explain)

GeForce GT 420 28800 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 3520 (14%)

Texel Rate

The GeForce GT 315 will be much (approximately 79%) better at texture filtering than the GeForce GT 420. (explain)

GeForce GT 315 10000 Mtexels/sec
GeForce GT 420 5600 Mtexels/sec
Difference: 4400 (79%)

Pixel Rate

The GeForce GT 315 should be a lot (approximately 79%) better at full screen anti-aliasing than the GeForce GT 420, and capable of handling higher resolutions while still performing well. (explain)

GeForce GT 315 5000 Mpixels/sec
GeForce GT 420 2800 Mpixels/sec
Difference: 2200 (79%)

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

Display Prices

Hide Prices

GeForce GT 315

Amazon.com

Check prices at:

GeForce GT 420

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

Display Specifications

Hide Specifications

Model GeForce GT 315 GeForce GT 420
Manufacturer nVidia nVidia
Year November 2009 September 2010
Code Name GT216 GF108
Memory 512 MB 2048 MB
Core Speed 625 MHz 700 MHz
Memory Speed 1580 MHz 1800 MHz
Power (Max TDP) 52 watts 50 watts
Bandwidth 25280 MB/sec 28800 MB/sec
Texel Rate 10000 Mtexels/sec 5600 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 48 48
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 486 million 585 million
Bus PCIe 2.0 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GT 315

Amazon.com

Check prices at:

GeForce GT 420

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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield