NVIDIA GeForce GT 640 vs AMD Radeon RX 6800 XT

VS

NVIDIA GeForce GT 640

AMD Radeon RX 6800 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 16GB VRAM Radeon RX 6800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 300W)

AMD Radeon RX 6800 XT 's Advantages

Released 8 years and 4 months late

Boost Clock2250MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 28.51GB/s)

4224 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon RX 6800 XT +2892%

20.74 TFLOPS

Blender

GeForce GT 640

32

Radeon RX 6800 XT +8181%

2650

GeForce GT 640

VS

Radeon RX 6800 XT

Graphics Card

Jun 2012

Release Date

Oct 2020

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2250 MHz

891 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

16GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

512.0GB/s

Render Config

-

Compute Units

72

-

384

Shading Units

4608

32

TMUs

288

16

ROPs

128

-

RT Cores

72

16 KB (per SMX)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

7.216 GPixel/s

Pixel Rate

288.0 GPixel/s

28.86 GTexel/s

Texture Rate

648.0 GTexel/s

-

FP16 (half)

41.47 TFLOPS

692.7 GFLOPS

FP32 (float)

20.74 TFLOPS

28.86 GFLOPS

FP64 (double)

1296 GFLOPS

Board Design

65W

TDP

300W

250 W

Suggested PSU

700 W

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

Outputs

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

None

Power Connectors

2x 8-pin

Graphics Processor

GK107

GPU Name

Navi 21

GK107-300-A2

GPU Variant

Navi 21 XT (215-121000177)

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

1.27 billion

Transistors

26.8 billion

118 mm²

Die Size

520 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.5

Related GPU Comparisons

1

NVIDIA GeForce GT 640 vs ATI Radeon HD 3850

2

NVIDIA GeForce GT 640 vs ATI Radeon HD 5450 PCIe x1

3

NVIDIA GeForce GT 640 vs AMD Radeon RX 6950 XT

4

NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 1070

5

NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 440 OEM

6

NVIDIA GeForce GT 640 vs AMD Radeon R9 360 OEM

7

NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 720

8

NVIDIA GeForce GT 640 vs ATI Radeon HD 2400 PRO

9

NVIDIA GeForce GT 640 vs NVIDIA GeForce RTX 4070 Ti

10

NVIDIA GeForce GT 640 vs ATI FirePro 2260 PCI

Related News

1

CPU-Z Minor Update: Support for Intel's Four New Products and New Memory

2

CXMT Reportedly Achieves 80% Yield in DDR5 Production

3

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

4

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

5

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps

6

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim

7

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

8

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

9

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

10

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip