Home GPU Comparison ATI Radeon HD 2900 XT vs NVIDIA GeForce 8400 GS PCI

ATI Radeon HD 2900 XT vs NVIDIA GeForce 8400 GS PCI

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XT and 512MB VRAM GeForce 8400 GS PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XT 's Advantages
Larger VRAM bandwidth (106.0GB/s vs 5.328GB/s)
312 additional rendering cores
NVIDIA GeForce 8400 GS PCI 's Advantages
Released 7 months late
Lower TDP (25W vs 215W)

Score

Benchmark

FP32 (float)
Radeon HD 2900 XT +2063%
0.476 TFLOPS
GeForce 8400 GS PCI
0.022 TFLOPS
VS

Graphics Card

May 2007
Release Date
Dec 2007
Radeon R600
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 1.0 x16
Bus Interface
PCI

Clock Speeds

-
-
-
-
-
-
828 MHz
Memory Clock
333 MHz

Memory

512MB
Memory Size
512MB
GDDR3
Memory Type
DDR2
512bit
Memory Bus
64bit
106.0GB/s
Bandwidth
5.328GB/s

Render Config

4
Compute Units
-
-
SM Count
1
320
Shading Units
8
16
TMUs
4
16
ROPs
4
-
-
-
-
-
-
-
-
-
256 KB
L2 Cache
16 KB
-
-
-

Theoretical Performance

11.89 GPixel/s
Pixel Rate
2.268 GPixel/s
11.89 GTexel/s
Texture Rate
2.268 GTexel/s
-
-
-
475.5 GFLOPS
FP32 (float)
22.40 GFLOPS
-
-
-

Board Design

215W
TDP
25W
550 W
Suggested PSU
200 W
2x DVI 1x S-Video
Outputs
1x S-Video 1x DMS-59
1x 6-pin + 1x 8-pin
Power Connectors
None

Graphics Processor

R600
GPU Name
G98
R600 XT (215RGMDKA13FG)
GPU Variant
G98-400-U2
TeraScale
Architecture
Tesla
TSMC
Foundry
TSMC
80 nm
Process Size
65 nm
0.72 billion
Transistors
0.21 billion
420 mm²
Die Size
86 mm²

Graphics Features

10.0 (10_0)
DirectX
11.1 (10_0)
3.3 (full) 4.0 (partial)
OpenGL
3.3
N/A
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
1.1
4.0
Shader Model
4.0

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