Home GPU Comparison NVIDIA GeForce GTX 490 vs ATI Radeon HD 2600 XT Mac Edition

NVIDIA GeForce GTX 490 vs ATI Radeon HD 2600 XT Mac Edition

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 256MB VRAM Radeon HD 2600 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 490 's Advantages
More VRAM (1536GB vs 256GB)
Larger VRAM bandwidth (164.0GB/s vs 25.60GB/s)
360 additional rendering cores
ATI Radeon HD 2600 XT Mac Edition 's Advantages
Lower TDP (45W vs 365W)

Score

Benchmark

FP32 (float)
GeForce GTX 490 +594%
1.166 TFLOPS
Radeon HD 2600 XT Mac Edition
0.168 TFLOPS
VS

Graphics Card

Unknown
Release Date
Feb 2008
GeForce 400
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 1.0 x16

Clock Speeds

-
-
-
-
-
-
854 MHz
Memory Clock
800 MHz

Memory

1536MB
Memory Size
256MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
128bit
164.0GB/s
Bandwidth
25.60GB/s

Render Config

-
Compute Units
3
15
SM Count
-
480
Shading Units
120
60
TMUs
8
48
ROPs
4
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
-
768 KB
L2 Cache
64 KB
-
-
-

Theoretical Performance

18.24 GPixel/s
Pixel Rate
2.800 GPixel/s
36.48 GTexel/s
Texture Rate
5.600 GTexel/s
-
-
-
1166 GFLOPS
FP32 (float)
168.0 GFLOPS
145.8 GFLOPS
FP64 (double)
-

Board Design

365W
TDP
45W
750 W
Suggested PSU
200 W
3x DVI 1x mini-DisplayPort
Outputs
2x DVI
2x 8-pin
Power Connectors
None

Graphics Processor

GF100
GPU Name
RV630
GF100-375-A3
GPU Variant
-
Fermi
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
65 nm
3.1 billion
Transistors
0.39 billion
529 mm²
Die Size
153 mm²

Graphics Features

12 (11_0)
DirectX
10.0 (10_0)
4.6
OpenGL
3.3
1.1
OpenCL
N/A
N/A
Vulkan
N/A
2.0
CUDA
-
5.1
Shader Model
4.0

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