AMD Radeon HD 6990 vs NVIDIA GeForce GT 620 OEM

VS

AMD Radeon HD 6990 NVIDIA GeForce GT 620 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 512MB VRAM GeForce GT 620 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 14.37GB/s)

1488 additional rendering cores

NVIDIA GeForce GT 620 OEM 's Advantages

Released 1 years and 1 months late

Lower TDP (30W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990 +1534%

2.55 TFLOPS

GeForce GT 620 OEM

0.156 TFLOPS

Radeon HD 6990

VS

GeForce GT 620 OEM

Graphics Card

Mar 2011

Release Date

Apr 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

898 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

14.37GB/s

Render Config

-

SM Count

1

24

Compute Units

-

1536

Shading Units

48

96

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

128 KB

Theoretical Performance

26.56 GPixel/s

Pixel Rate

1.620 GPixel/s

79.68 GTexel/s

Texture Rate

6.480 GTexel/s

-

FP16 (half)

-

2.550 TFLOPS

FP32 (float)

155.5 GFLOPS

637.4 GFLOPS

FP64 (double)

12.96 GFLOPS

Graphics Processor

Antilles

GPU Name

GF119

Antilles XT (215-0807027)

GPU Variant

-

TeraScale 3

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.64 billion

Transistors

0.292 billion

389 mm²

Die Size

79 mm²

Board Design

375W

TDP

30W

750 W

Suggested PSU

200 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 8-pin

Power Connectors

None

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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