Home GPU Comparison NVIDIA GeForce RTX 4090 D vs NVIDIA GeForce GT 640 OEM

NVIDIA GeForce RTX 4090 D vs NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 D and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 D 's Advantages
Released 11 years and 8 months late
Boost Clock2520MHz
More VRAM (24GB vs 2GB)
Larger VRAM bandwidth (1008GB/s vs 28.51GB/s)
14208 additional rendering cores
NVIDIA GeForce GT 640 OEM 's Advantages
Lower TDP (50W vs 425W)

Score

Benchmark

FP32 (float)
GeForce RTX 4090 D +11916%
73.54 TFLOPS
GeForce GT 640 OEM
0.612 TFLOPS
VS

Graphics Card

Dec 2023
Release Date
Apr 2012
GeForce 40
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

2280 MHz
Base Clock
-
2520 MHz
Boost Clock
-
1313 MHz
Memory Clock
891 MHz

Memory

24GB
Memory Size
2GB
GDDR6X
Memory Type
DDR3
384bit
Memory Bus
128bit
1008GB/s
Bandwidth
28.51GB/s

Render Config

-
-
-
114
SM Count
-
14592
Shading Units
384
456
TMUs
32
176
ROPs
16
456
Tensor Cores
-
114
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per SMX)
72 MB
L2 Cache
256 KB
-
-
-

Theoretical Performance

443.5 GPixel/s
Pixel Rate
6.376 GPixel/s
1149 GTexel/s
Texture Rate
25.50 GTexel/s
73.54 TFLOPS
FP16 (half)
-
73.54 TFLOPS
FP32 (float)
612.1 GFLOPS
1149 GFLOPS
FP64 (double)
25.50 GFLOPS

Board Design

425W
TDP
50W
800 W
Suggested PSU
250 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 16-pin
Power Connectors
None

Graphics Processor

AD102
GPU Name
GK107
AD102-250-A1
GPU Variant
GK107-320-A2
Ada Lovelace
Architecture
Kepler
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
76.3 billion
Transistors
1.27 billion
609 mm²
Die Size
118 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
8.9
CUDA
3.0
6.7
Shader Model
5.1

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