Home GPU Comparison NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 4850

NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 4850

NVIDIA GeForce GTX 660 Rev. 2
VS
ATI Radeon HD 4850
NVIDIA GeForce GTX 660 Rev. 2
ATI Radeon HD 4850
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 512MB VRAM Radeon HD 4850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 6 years and 3 months late
Boost Clock1032MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (144.2GB/s vs 63.55GB/s)
160 additional rendering cores
ATI Radeon HD 4850 's Advantages
Lower TDP (110W vs 140W)

Score

Benchmark

FP32 (float)
GeForce GTX 660 Rev. 2 +98%
1.981 TFLOPS
Radeon HD 4850
1 TFLOPS
GeForce GTX 660 Rev. 2
VS
Radeon HD 4850

Graphics Card

Sep 2014
Release Date
Jun 2008
GeForce 600
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

980 MHz
Base Clock
-
1032 MHz
Boost Clock
-
1502 MHz
Memory Clock
993 MHz

Memory

2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
63.55GB/s

Render Config

-
Compute Units
10
-
-
-
960
Shading Units
800
80
TMUs
40
24
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

20.64 GPixel/s
Pixel Rate
10.00 GPixel/s
82.56 GTexel/s
Texture Rate
25.00 GTexel/s
-
-
-
1.981 TFLOPS
FP32 (float)
1000 GFLOPS
82.56 GFLOPS
FP64 (double)
200.0 GFLOPS

Board Design

140W
TDP
110W
300 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x S-Video
1x 6-pin
Power Connectors
1x 6-pin

Graphics Processor

GK104
GPU Name
RV770
-
GPU Variant
RV770 PRO (215-0669065)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
3.54 billion
Transistors
0.956 billion
294 mm²
Die Size
256 mm²

Graphics Features

12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
4.1

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