NVIDIA GeForce GTX 680 vs AMD Radeon R9 255 OEM

VS

NVIDIA GeForce GTX 680

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 680 and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 680 's Advantages

Boost Clock has increased by 14% (1058MHz vs 930MHz)

Larger VRAM bandwidth (192.3GB/s vs 73.60GB/s)

1024 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Released 1 years and 9 months late

Lower TDP (65W vs 195W)

Score

Benchmark

FP32 (float)

GeForce GTX 680 +241%

3.25 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

GeForce GTX 680

VS

Radeon R9 255 OEM

Graphics Card

Mar 2012

Release Date

Dec 2013

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1006 MHz

Base Clock

900 MHz

1058 MHz

Boost Clock

930 MHz

1502 MHz

Memory Clock

1150 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

192.3GB/s

Bandwidth

73.60GB/s

Render Config

-

Compute Units

8

-

1536

Shading Units

512

128

TMUs

32

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

33.86 GPixel/s

Pixel Rate

14.88 GPixel/s

135.4 GTexel/s

Texture Rate

29.76 GTexel/s

-

3.250 TFLOPS

FP32 (float)

952.3 GFLOPS

135.4 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

195W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

No outputs

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GK104

GPU Name

Cape Verde

GK104-400-A2

GPU Variant

Cape Verde PRX

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

1.5 billion

294 mm²

Die Size

123 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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