GeForce GT 640 vs GRID K520

#ad 
Buy on Amazon
VS

Aggregate performance score

We've compared GRID K520 with GeForce GT 640, including specs and performance data.

GRID K520
2013
4 GB GDDR5, 225 Watt
9.13
+198%

GRID K520 outperforms GT 640 by a whopping 198% based on our aggregate benchmark results.

Primary details

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

Place in the ranking479769
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.340.20
Power efficiency2.783.23
ArchitectureKepler (2012−2018)Kepler (2012−2018)
GPU code nameGK104GK107
Market segmentWorkstationDesktop
Release date23 July 2013 (11 years ago)5 June 2012 (12 years ago)
Launch price (MSRP)$3,599 $99

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GRID K520 has 70% better value for money than GT 640.

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 cores1536384
Core clock speed745 MHz902 MHz
Number of transistors3,540 million1,270 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)225 Watt65 Watt
Texture fill rate95.3628.86
Floating-point processing power2.289 TFLOPS0.6927 TFLOPS
ROPs3216
TMUs12832

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 3.0 x16
Length267 mm145 mm
Width2-slot1-slot
Supplementary power connectors1x 8-pinNone

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 typeGDDR5DDR3
Maximum RAM amount4 GB2 GB
Memory bus width256 Bit128 Bit
Memory clock speed1250 MHz891 MHz
Memory bandwidth160.0 GB/s28.51 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 ConnectorsNo outputs1x DVI, 1x HDMI, 1x DisplayPort
HDMI-+

API compatibility

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

DirectX12 (11_0)12 (11_0)
Shader Model5.15.1
OpenGL4.64.6
OpenCL1.21.2
Vulkan1.1.1261.1.126
CUDA3.03.0

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.

GRID K520 9.13
+198%
GT 640 3.06

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.

GRID K520 3516
+198%
GT 640 1178

Octane Render OctaneBench

This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.

GRID K520 40
+300%
GT 640 10

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 9.13 3.06
Recency 23 July 2013 5 June 2012
Maximum RAM amount 4 GB 2 GB
Power consumption (TDP) 225 Watt 65 Watt

GRID K520 has a 198.4% higher aggregate performance score, an age advantage of 1 year, and a 100% higher maximum VRAM amount.

GT 640, on the other hand, has 246.2% lower power consumption.

The GRID K520 is our recommended choice as it beats the GeForce GT 640 in performance tests.

Be aware that GRID K520 is a workstation graphics card while GeForce GT 640 is a desktop one.


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 GRID K520
GRID K520
NVIDIA GeForce GT 640
GeForce GT 640

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.


2.3 3 votes

Rate GRID K520 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.4 1576 votes

Rate GeForce GT 640 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.