NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 660 Ti

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 150W)

NVIDIA GeForce GTX 660 Ti 's Advantages

Boost Clock980MHz

More VRAM (2GB vs 1536GB)

Larger VRAM bandwidth (144.2GB/s vs 38.40GB/s)

1200 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 660 Ti +534%

2.634 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 660 Ti

Graphics Card

Apr 2012

Release Date

Aug 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

915 MHz

-

Boost Clock

980 MHz

800 MHz

Memory Clock

1502 MHz

Memory

1536MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

192bit

38.40GB/s

Bandwidth

144.2GB/s

Render Config

-

3

SM Count

-

144

Shading Units

1344

24

TMUs

112

24

ROPs

24

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

384 KB

L2 Cache

384 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

27.44 GPixel/s

17.28 GTexel/s

Texture Rate

109.8 GTexel/s

-

414.7 GFLOPS

FP32 (float)

2.634 TFLOPS

34.56 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

75W

TDP

150W

250 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

GF116

GPU Name

GK104

GF116-150-A1

GPU Variant

GK104-300-KD-A2

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

3.54 billion

238 mm²

Die Size

294 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

Related GPU Comparisons

1

NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GT 620 OEM

2

NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 580 Rev. 2

3

NVIDIA GeForce GT 640 OEM Rebrand vs AMD FireStream 9170

4

NVIDIA GeForce GT 640 OEM Rebrand vs Intel Arc A310

5

NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon HD 7470 OEM

6

NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon HD 8970 OEM

7

NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce 8400 GS PCI Rev. 2

8

NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 460 SE

9

NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce RTX 3070 Ti

10

NVIDIA GeForce GT 640 OEM Rebrand vs ATI FirePro V4800

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