GeForce 7800 GTX vs GT 640

VS

Aggregate performance score

We've compared GeForce GT 640 and GeForce 7800 GTX, covering specs and all relevant benchmarks.

GT 640
2012
2 GB DDR3, 65 Watt
3.06
+308%

GT 640 outperforms 7800 GTX by a whopping 308% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking7691156
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.200.01
Power efficiency3.230.60
ArchitectureKepler (2012−2018)Curie (2003−2013)
GPU code nameGK107G70
Market segmentDesktopDesktop
Release date5 June 2012 (12 years ago)22 June 2005 (19 years ago)
Launch price (MSRP)$99 $599

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GT 640 has 1900% better value for money than 7800 GTX.

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores384no data
Core clock speed902 MHz430 MHz
Number of transistors1,270 million302 million
Manufacturing process technology28 nm110 nm
Power consumption (TDP)65 Watt86 Watt
Texture fill rate28.8610.32
Floating-point processing power0.6927 TFLOPSno data
ROPs1616
TMUs3224

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 3.0 x16PCIe 1.0 x16
Length145 mm228 mm
Width1-slot1-slot
Supplementary power connectorsNoneno data

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeDDR3GDDR3
Maximum RAM amount2 GB256 MB
Memory bus width128 Bit256 Bit
Memory clock speed891 MHz600 MHz
Memory bandwidth28.51 GB/s38.4 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors1x DVI, 1x HDMI, 1x DisplayPort2x DVI, 1x S-Video
HDMI+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_0)9.0c (9_3)
Shader Model5.13.0
OpenGL4.62.1
OpenCL1.2N/A
Vulkan1.1.126N/A
CUDA3.0-

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GT 640 3.06
+308%
7800 GTX 0.75

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

GT 640 1178
+306%
7800 GTX 290

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary


Performance score 3.06 0.75
Recency 5 June 2012 22 June 2005
Maximum RAM amount 2 GB 256 MB
Chip lithography 28 nm 110 nm
Power consumption (TDP) 65 Watt 86 Watt

GT 640 has a 308% higher aggregate performance score, an age advantage of 6 years, a 700% higher maximum VRAM amount, a 292.9% more advanced lithography process, and 32.3% lower power consumption.

The GeForce GT 640 is our recommended choice as it beats the GeForce 7800 GTX in performance tests.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA GeForce GT 640
GeForce GT 640
NVIDIA GeForce 7800 GTX
GeForce 7800 GTX

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.4 1576 votes

Rate GeForce GT 640 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.5 34 votes

Rate GeForce 7800 GTX on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.