Home GPU Comparison NVIDIA GeForce 8400 vs AMD Radeon R9 280X2

NVIDIA GeForce 8400 vs AMD Radeon R9 280X2

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 3GB VRAM Radeon R9 280X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 's Advantages
Lower TDP (25W vs 375W)
AMD Radeon R9 280X2 's Advantages
Boost Clock1000MHz
More VRAM (3GB vs 256GB)
Larger VRAM bandwidth (288.0GB/s vs 8.000GB/s)
2040 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce 8400
0.021 TFLOPS
Radeon R9 280X2 +19404%
4.096 TFLOPS
VS

Graphics Card

Dec 2007
Release Date
Unknown
GeForce 8
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
Base Clock
950 MHz
-
Boost Clock
1000 MHz
500 MHz
Memory Clock
1500 MHz

Memory

256MB
Memory Size
3GB
DDR2
Memory Type
GDDR5
64bit
Memory Bus
384bit
8.000GB/s
Bandwidth
288.0GB/s

Render Config

-
Compute Units
32
1
SM Count
-
8
Shading Units
2048
4
TMUs
128
4
ROPs
32
-
-
-
-
-
-
-
L1 Cache
16 KB (per CU)
16 KB
L2 Cache
768 KB
-
-
-

Theoretical Performance

2.160 GPixel/s
Pixel Rate
32.00 GPixel/s
2.160 GTexel/s
Texture Rate
128.0 GTexel/s
-
-
-
20.80 GFLOPS
FP32 (float)
4.096 TFLOPS
-
FP64 (double)
1024 GFLOPS

Board Design

25W
TDP
375W
200 W
Suggested PSU
750 W
1x DVI 1x VGA 1x S-Video
Outputs
6x mini-DisplayPort 1.2
None
Power Connectors
3x 8-pin

Graphics Processor

G98
GPU Name
Tahiti
-
GPU Variant
Tahiti XTL (215-0821065)
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

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