AMD Radeon RX 7800 XT vs NVIDIA GeForce GTX 660 Ti

VS

AMD Radeon RX 7800 XT

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 XT and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800 XT 's Advantages

Released 11 years late

Boost Clock has increased by 148% (2430MHz vs 980MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (624.1GB/s vs 144.2GB/s)

2496 additional rendering cores

NVIDIA GeForce GTX 660 Ti 's Advantages

Lower TDP (150W vs 263W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 XT +1316%

37.32 TFLOPS

GeForce GTX 660 Ti

2.634 TFLOPS

3DMark Time Spy

Radeon RX 7800 XT +1131%

20031

GeForce GTX 660 Ti

1627

Blender

Radeon RX 7800 XT +1716%

2652

GeForce GTX 660 Ti

146

Radeon RX 7800 XT

VS

GeForce GTX 660 Ti

Graphics Card

Aug 2023

Release Date

Aug 2012

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1295 MHz

Base Clock

915 MHz

2430 MHz

Boost Clock

980 MHz

2438 MHz

Memory Clock

1502 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

192bit

624.1GB/s

Bandwidth

144.2GB/s

Render Config

60

Compute Units

-

3840

Shading Units

1344

240

TMUs

112

96

ROPs

24

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

384 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

27.44 GPixel/s

583.2 GTexel/s

Texture Rate

109.8 GTexel/s

74.65 TFLOPS

FP16 (half)

-

37.32 TFLOPS

FP32 (float)

2.634 TFLOPS

1166 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

263W

TDP

150W

600 W

Suggested PSU

450 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

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

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Navi 32

GPU Name

GK104

Navi 32 XT (215-180000006)

GPU Variant

GK104-300-KD-A2

RDNA 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

28.1 billion

Transistors

3.54 billion

346 mm²

Die Size

294 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.7

Shader Model

5.1

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