Home GPU Comparison NVIDIA GeForce GTX 660 OEM vs AMD Radeon R9 285

NVIDIA GeForce GTX 660 OEM vs AMD Radeon R9 285

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 2GB VRAM Radeon R9 285 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
Lower TDP (130W vs 190W)
AMD Radeon R9 285 's Advantages
Released 2 years and 1 months late
More VRAM (2GB vs 1536GB)
Larger VRAM bandwidth (176.0GB/s vs 134.4GB/s)
640 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GTX 660 OEM
2.046 TFLOPS
Radeon R9 285 +60%
3.29 TFLOPS
VS

Graphics Card

Aug 2012
Release Date
Sep 2014
GeForce 600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

823 MHz
Base Clock
-
888 MHz
Boost Clock
-
1400 MHz
Memory Clock
1375 MHz

Memory

1536MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
134.4GB/s
Bandwidth
176.0GB/s

Render Config

-
Compute Units
28
-
-
-
1152
Shading Units
1792
96
TMUs
112
24
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

21.31 GPixel/s
Pixel Rate
29.38 GPixel/s
85.25 GTexel/s
Texture Rate
102.8 GTexel/s
-
FP16 (half)
3.290 TFLOPS
2.046 TFLOPS
FP32 (float)
3.290 TFLOPS
85.25 GFLOPS
FP64 (double)
205.6 GFLOPS

Board Design

130W
TDP
190W
300 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin
Power Connectors
2x 6-pin

Graphics Processor

GK104
GPU Name
Tonga
GK104-200-KD-A2
GPU Variant
Tonga PRO (215-0851128)
Kepler
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
5 billion
294 mm²
Die Size
366 mm²

Graphics Features

12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.1
Vulkan
1.2.170
3.0
CUDA
-
5.1
Shader Model
6.5

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