Home GPU Comparison AMD Radeon Sky 900 vs NVIDIA GeForce GT 620

AMD Radeon Sky 900 vs NVIDIA GeForce GT 620

We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 1024MB VRAM GeForce GT 620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 900 's Advantages
Released 10 months late
Boost Clock950MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (240.0GB/s vs 14.40GB/s)
1696 additional rendering cores
NVIDIA GeForce GT 620 's Advantages
Lower TDP (49W vs 300W)

Score

Benchmark

FP32 (float)
Radeon Sky 900 +1165%
3.405 TFLOPS
GeForce GT 620
0.269 TFLOPS
VS

Graphics Card

Mar 2013
Release Date
May 2012
Radeon Sky
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

825 MHz
Base Clock
-
950 MHz
Boost Clock
-
1250 MHz
Memory Clock
900 MHz

Memory

3GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
384bit
Memory Bus
64bit
240.0GB/s
Bandwidth
14.40GB/s

Render Config

28
Compute Units
-
-
SM Count
2
1792
Shading Units
96
112
TMUs
16
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
768 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

30.40 GPixel/s
Pixel Rate
2.800 GPixel/s
106.4 GTexel/s
Texture Rate
11.20 GTexel/s
-
-
-
3.405 TFLOPS
FP32 (float)
268.8 GFLOPS
851.2 GFLOPS
FP64 (double)
22.40 GFLOPS

Board Design

300W
TDP
49W
700 W
Suggested PSU
200 W
1x DVI 1x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
2x 8-pin
Power Connectors
None

Graphics Processor

Tahiti
GPU Name
GF108
Orthrus
GPU Variant
GF108-100-KB-A1
GCN 1.0
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
0.585 billion
352 mm²
Die Size
116 mm²

Graphics Features

12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
2.1
5.1
Shader Model
5.1

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