GeForce GTX 780 vs Radeon R9 255 OEM

VS

NVIDIA GeForce GTX 780

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 3GB VRAM GeForce GTX 780 and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

GeForce GTX 780 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.4GB/s vs 73.60GB/s)

1792 additional rendering cores

Radeon R9 255 OEM 's Advantages

Released 7 months late

Boost Clock has increased by 3% (930MHz vs 902MHz)

Lower TDP (65W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 780 +336%

4156

Radeon R9 255 OEM

952

GeForce GTX 780

VS

Radeon R9 255 OEM

Graphics Card

May 2013

Release Date

Dec 2013

GeForce 700

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

863 MHz

Base Clock

900 MHz

902 MHz

Boost Clock

930 MHz

1502 MHz

Memory Clock

1150 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

288.4GB/s

Bandwidth

73.60GB/s

Render Config

-

Compute Units

8

2304

Shading Units

512

192

TMUs

32

48

ROPs

16

16 KB (per SMX)

L1 Cache

16 KB (per CU)

1536 KB

L2 Cache

256 KB

Theoretical Performance

43.30 GPixel/s

Pixel Rate

14.88 GPixel/s

173.2 GTexel/s

Texture Rate

29.76 GTexel/s

4.156 TFLOPS

FP32 (float)

952.3 GFLOPS

173.2 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

250W

TDP

65W

600 W

Suggested PSU

250 W

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

Outputs

No outputs

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

GK110

GPU Name

Cape Verde

GK110-300-A1

GPU Variant

Cape Verde PRX

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

7.08 billion

Transistors

1.5 billion

561 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

3.5

CUDA

-

5.1

Shader Model

5.1

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