GeForce 8400 GS PCI vs Radeon Sky 900
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 8400 GS PCI 's Advantages
Lower TDP (25W vs 300W)
Radeon Sky 900 's Advantages
Released 5 years and 3 months late
Boost Clock950MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (240.0GB/s vs 5.328GB/s)
1784 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8400 GS PCI
22
Radeon Sky 900
+15377%
3405
Graphics Card
Dec 2007
Release Date
Mar 2013
GeForce 8
Generation
Radeon Sky
Desktop
Type
Desktop
PCI
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
825 MHz
-
Boost Clock
950 MHz
333 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
3GB
DDR2
Memory Type
GDDR5
64bit
Memory Bus
384bit
5.328GB/s
Bandwidth
240.0GB/s
Render Config
-
Compute Units
28
1
SM Count
-
8
Shading Units
1792
4
TMUs
112
4
ROPs
32
-
L1 Cache
16 KB (per CU)
16 KB
L2 Cache
768 KB
Theoretical Performance
2.268 GPixel/s
Pixel Rate
30.40 GPixel/s
2.268 GTexel/s
Texture Rate
106.4 GTexel/s
22.40 GFLOPS
FP32 (float)
3.405 TFLOPS
-
FP64 (double)
851.2 GFLOPS
Board Design
25W
TDP
300W
200 W
Suggested PSU
700 W
1x S-Video
1x DMS-59
Outputs
1x DVI
1x mini-DisplayPort 1.2
None
Power Connectors
2x 8-pin
Graphics Processor
G98
GPU Name
Tahiti
G98-400-U2
GPU Variant
Orthrus
Tesla
Architecture
GCN 1.0
TSMC
Foundry
TSMC
65 nm
Process Size
28 nm
0.21 billion
Transistors
4.313 billion
86 mm²
Die Size
352 mm²
Graphics Features
11.1 (10_0)
DirectX
12 (11_1)
3.3
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
1.1
CUDA
-
4.0
Shader Model
5.1