NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 780 Ti Engineering Sample

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 780 Ti Engineering Sample

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 3GB VRAM GeForce GTX 780 Ti Engineering Sample 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 250W)

NVIDIA GeForce GTX 780 Ti Engineering Sample 's Advantages

Boost Clock928MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (336.6GB/s vs 28.51GB/s)

2496 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce GTX 780 Ti Engineering Sample +671%

5.345 TFLOPS

GeForce GT 640

VS

GeForce GTX 780 Ti Engineering Sample

Graphics Card

Jun 2012

Release Date

Unknown

GeForce 600

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

875 MHz

-

Boost Clock

928 MHz

891 MHz

Memory Clock

1753 MHz

Memory

2GB

Memory Size

3GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

336.6GB/s

Render Config

-

384

Shading Units

2880

32

TMUs

240

16

ROPs

48

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

1536 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

55.68 GPixel/s

28.86 GTexel/s

Texture Rate

222.7 GTexel/s

-

692.7 GFLOPS

FP32 (float)

5.345 TFLOPS

28.86 GFLOPS

FP64 (double)

222.7 GFLOPS

Board Design

65W

TDP

250W

250 W

Suggested PSU

600 W

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

Outputs

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

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

GK180

GK107-300-A2

GPU Variant

GK180-425-A1

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

7.08 billion

118 mm²

Die Size

561 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.2.175

3.0

CUDA

3.5

5.1

Shader Model

5.1

Related GPU Comparisons

1

NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 470 X2

2

NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 1030

3

NVIDIA GeForce GT 640 vs AMD Radeon RX 570X

4

NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 1080 Ti 12 GB

5

NVIDIA GeForce GT 640 vs ATI FireGL V5600

6

NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 285

7

NVIDIA GeForce GT 640 vs ATI Radeon HD 4670 X2

8

NVIDIA GeForce GT 640 vs AMD Radeon HD 8350 OEM

9

NVIDIA GeForce GT 640 vs NVIDIA GeForce RTX 3090

10

NVIDIA GeForce GT 640 vs AMD Radeon R9 390X

Related News

1

CXMT Reportedly Achieves 80% Yield in DDR5 Production

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage