NVIDIA T400 4 GB vs AMD Radeon HD 6990

VS

We compared two Desktop platform GPUs: 4GB VRAM T400 4 GB and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA T400 4 GB 's Advantages

Released 10 years and 2 months late

Boost Clock1425MHz

More VRAM (4GB vs 2GB)

Lower TDP (30W vs 375W)

AMD Radeon HD 6990 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 80.00GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

T400 4 GB

1.094 TFLOPS

Radeon HD 6990 +133%

2.55 TFLOPS

T400 4 GB

VS

Radeon HD 6990

Graphics Card

May 2021

Release Date

Mar 2011

Quadro

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

420 MHz

Base Clock

-

1425 MHz

Boost Clock

-

1250 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

256bit

80.00GB/s

Bandwidth

160.0GB/s

Render Config

6

SM Count

-

Compute Units

24

384

Shading Units

1536

24

TMUs

96

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

1024 KB

L2 Cache

512 KB

Theoretical Performance

22.80 GPixel/s

Pixel Rate

26.56 GPixel/s

34.20 GTexel/s

Texture Rate

79.68 GTexel/s

2.189 TFLOPS

FP16 (half)

-

1094 GFLOPS

FP32 (float)

2.550 TFLOPS

34.20 GFLOPS

FP64 (double)

637.4 GFLOPS

Graphics Processor

TU117

GPU Name

Antilles

-

GPU Variant

Antilles XT (215-0807027)

Turing

Architecture

TeraScale 3

TSMC

Foundry

TSMC

12 nm

Process Size

40 nm

4.7 billion

Transistors

2.64 billion

200 mm²

Die Size

389 mm²

Board Design

30W

TDP

375W

200 W

Suggested PSU

750 W

3x mini-DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

None

Power Connectors

2x 8-pin

Graphics Features

12 (12_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.3

Vulkan

N/A

7.5

CUDA

-

6.6

Shader Model

5.0

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