Home GPU Comparison NVIDIA GeForce GTX 660 OEM vs AMD Radeon HD 8490 OEM

NVIDIA GeForce GTX 660 OEM vs AMD Radeon HD 8490 OEM

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 1024MB VRAM Radeon HD 8490 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages
Boost Clock888MHz
More VRAM (1536GB vs 1024GB)
Larger VRAM bandwidth (134.4GB/s vs 14.40GB/s)
992 additional rendering cores
AMD Radeon HD 8490 OEM 's Advantages
Released 11 months late
Lower TDP (35W vs 130W)

Score

Benchmark

FP32 (float)
GeForce GTX 660 OEM +630%
2.046 TFLOPS
Radeon HD 8490 OEM
0.28 TFLOPS
VS

Graphics Card

Aug 2012
Release Date
Jul 2013
GeForce 600
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

823 MHz
Base Clock
-
888 MHz
Boost Clock
-
1400 MHz
Memory Clock
900 MHz

Memory

1536MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
192bit
Memory Bus
64bit
134.4GB/s
Bandwidth
14.40GB/s

Render Config

-
Compute Units
2
-
-
-
1152
Shading Units
160
96
TMUs
8
24
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
8 KB (per CU)
384 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

21.31 GPixel/s
Pixel Rate
3.500 GPixel/s
85.25 GTexel/s
Texture Rate
7.000 GTexel/s
-
-
-
2.046 TFLOPS
FP32 (float)
280.0 GFLOPS
85.25 GFLOPS
FP64 (double)
-

Board Design

130W
TDP
35W
300 W
Suggested PSU
200 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x DisplayPort 1.1
1x 6-pin
Power Connectors
None

Graphics Processor

GK104
GPU Name
Caicos
GK104-200-KD-A2
GPU Variant
Caicos XTX
Kepler
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
3.54 billion
Transistors
0.37 billion
294 mm²
Die Size
67 mm²

Graphics Features

12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
5.0

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