NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 6800

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon RX 6800

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 16GB VRAM Radeon RX 6800 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 250W)

AMD Radeon RX 6800 's Advantages

Released 8 years and 6 months late

Boost Clock2105MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (512.0GB/s vs 91.87GB/s)

3552 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon RX 6800 +1708%

16.17 TFLOPS

GeForce GT 645 OEM

VS

Radeon RX 6800

Graphics Card

Apr 2012

Release Date

Oct 2020

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1700 MHz

-

Boost Clock

2105 MHz

957 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

256bit

91.87GB/s

Bandwidth

512.0GB/s

Render Config

-

Compute Units

60

6

SM Count

-

288

Shading Units

3840

48

TMUs

240

24

ROPs

96

-

RT Cores

60

64 KB (per SM)

L1 Cache

128 KB per Array

384 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

9.312 GPixel/s

Pixel Rate

202.1 GPixel/s

37.25 GTexel/s

Texture Rate

505.2 GTexel/s

-

FP16 (half)

32.33 TFLOPS

894.0 GFLOPS

FP32 (float)

16.17 TFLOPS

74.50 GFLOPS

FP64 (double)

1010 GFLOPS

Board Design

102W

TDP

250W

300 W

Suggested PSU

600 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

-

Power Connectors

2x 8-pin

Graphics Processor

GF114

GPU Name

Navi 21

-

GPU Variant

Navi 21 XL (215-121000187)

Fermi 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

1.95 billion

Transistors

26.8 billion

332 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

2.1

CUDA

-

5.1

Shader Model

6.5

Related GPU Comparisons

1

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 1650 SUPER

2

NVIDIA GeForce GT 645 OEM vs ATI FireGL V8650

3

NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 3850 AGP

4

NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 4550

5

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce RTX 4060 Ti AD104

6

NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 580G

7

NVIDIA GeForce GT 645 OEM vs AMD Radeon R5 235 OEM

8

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 285 Mac Edition

9

NVIDIA GeForce GT 645 OEM vs AMD Radeon R5 435 OEM

10

NVIDIA GeForce GT 645 OEM vs NVIDIA T400

Related News

1

Continuous Decline in DRAM Memory Prices: Downward Trend Intensifies

2

NVIDIA GB202 Chip Unveiled for the First Time, to be Used in RTX 5090 with 512-bit GDDR7 Memory

3

Strix Halo Integrated Graphics Score Appears on Passmark, Currently Slightly Below RTX 3060 12GB

4

AMD Unveils New RX 9070 XT Graphics Card Performance: Positioned Between RX 7900 GRE and RX 7900 XT

5

Double the Excitement! AMD FSR 4.0 to Launch Alongside RX 9070 XT Graphics Card

6

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

7

CXMT Reportedly Achieves 80% Yield in DDR5 Production

8

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

9

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

10

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