NVIDIA GeForce GTX 490 vs AMD Radeon RX 6900 XTX

VS

NVIDIA GeForce GTX 490

AMD Radeon RX 6900 XTX

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 16GB VRAM Radeon RX 6900 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XTX 's Advantages

Boost Clock2435MHz

More VRAM (16GB vs 1536GB)

Larger VRAM bandwidth (576.0GB/s vs 164.0GB/s)

4640 additional rendering cores

Lower TDP (330W vs 365W)

Score

Benchmark

FP32 (float)

GeForce GTX 490

1.166 TFLOPS

Radeon RX 6900 XTX +2038%

24.93 TFLOPS

GeForce GTX 490

VS

Radeon RX 6900 XTX

Graphics Card

Unknown

Release Date

Unknown

GeForce 400

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2075 MHz

-

Boost Clock

2435 MHz

854 MHz

Memory Clock

2250 MHz

Memory

1536MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

256bit

164.0GB/s

Bandwidth

576.0GB/s

Render Config

-

Compute Units

80

15

SM Count

-

480

Shading Units

5120

60

TMUs

320

48

ROPs

128

-

RT Cores

80

64 KB (per SM)

L1 Cache

128 KB per Array

768 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

18.24 GPixel/s

Pixel Rate

311.7 GPixel/s

36.48 GTexel/s

Texture Rate

779.2 GTexel/s

-

FP16 (half)

49.87 TFLOPS

1166 GFLOPS

FP32 (float)

24.93 TFLOPS

145.8 GFLOPS

FP64 (double)

1.558 TFLOPS

Board Design

365W

TDP

330W

750 W

Suggested PSU

700 W

3x DVI 1x mini-DisplayPort

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

GF100

GPU Name

Navi 21

GF100-375-A3

GPU Variant

Navi 21 XTXH (215-121000247)

Fermi

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

3.1 billion

Transistors

26.8 billion

529 mm²

Die Size

520 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.3

2.0

CUDA

-

5.1

Shader Model

6.5

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