NVIDIA GeForce 8400 GS vs ATI Radeon HD 3870 Mac Edition
We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 GS and 512MB VRAM Radeon HD 3870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 8400 GS 's Advantages
Lower TDP (40W vs 106W)
ATI Radeon HD 3870 Mac Edition 's Advantages
Released 1 years and 2 months late
More VRAM (512GB vs 256GB)
Larger VRAM bandwidth (72.06GB/s vs 6.400GB/s)
304 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8400 GS
0.029 TFLOPS
Radeon HD 3870 Mac Edition
+1613%
0.497 TFLOPS
Graphics Card
Apr 2007
Release Date
Jun 2008
GeForce 8
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 1.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
400 MHz
Memory Clock
1126 MHz
Memory
256MB
Memory Size
512MB
DDR2
Memory Type
GDDR4
64bit
Memory Bus
256bit
6.400GB/s
Bandwidth
72.06GB/s
Render Config
-
Compute Units
4
2
SM Count
-
16
Shading Units
320
8
TMUs
16
4
ROPs
16
-
-
-
-
-
-
-
-
-
16 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
1.836 GPixel/s
Pixel Rate
12.43 GPixel/s
3.672 GTexel/s
Texture Rate
12.43 GTexel/s
-
-
-
29.38 GFLOPS
FP32 (float)
497.3 GFLOPS
-
FP64 (double)
99.46 GFLOPS
Board Design
40W
TDP
106W
200 W
Suggested PSU
300 W
1x DVI
1x VGA
1x S-Video
Outputs
2x DVI
1x S-Video
None
Power Connectors
1x 6-pin
Graphics Processor
G86
GPU Name
RV670
G86-213-A2
GPU Variant
RV670 XT
(215-0708005)
Tesla
Architecture
TeraScale
TSMC
Foundry
TSMC
80 nm
Process Size
55 nm
0.21 billion
Transistors
0.666 billion
127 mm²
Die Size
192 mm²
Graphics Features
11.1 (10_0)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3 (full)
4.0 (partial)
1.1
OpenCL
N/A
N/A
Vulkan
N/A
1.1
CUDA
-
4.0
Shader Model
4.1
