GeForce 830A vs GT 640

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Aggregate performance score

We've compared GeForce GT 640 with GeForce 830A, including specs and performance data.

GT 640
2012
2 GB DDR3, 65 Watt
3.05

830A outperforms GT 640 by a minimal 1% based on our aggregate benchmark results.

Primary details

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

Place in the ranking767762
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.20no data
Power efficiency3.276.51
ArchitectureKepler (2012−2018)Maxwell (2014−2017)
GPU code nameGK107GM108
Market segmentDesktopLaptop
Release date5 June 2012 (12 years ago)22 July 2014 (10 years ago)
Launch price (MSRP)$99 no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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 cores384256
Core clock speed902 MHz1082 MHz
Boost clock speedno data1150 MHz
Number of transistors1,270 millionno data
Manufacturing process technology28 nm28 nm
Power consumption (TDP)65 Watt33 Watt
Texture fill rate28.8618.40
Floating-point processing power0.6927 TFLOPS0.5888 TFLOPS
ROPs168
TMUs3216

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 x8
Length145 mmno data
Width1-slotno data
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 typeDDR3DDR3
Maximum RAM amount2 GB2 GB
Memory bus width128 Bit64 Bit
Memory clock speed891 MHz900 MHz
Memory bandwidth28.51 GB/s14.4 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 DisplayPortNo outputs
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
CUDA3.05.0

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 3.05
GeForce 830A 3.08
+1%

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 1176
GeForce 830A 1187
+0.9%

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 3.05 3.08
Recency 5 June 2012 22 July 2014
Power consumption (TDP) 65 Watt 33 Watt

GeForce 830A has a 1% higher aggregate performance score, an age advantage of 2 years, and 97% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between GeForce GT 640 and GeForce 830A.

Be aware that GeForce GT 640 is a desktop card while GeForce 830A is a notebook one.


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

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NVIDIA GeForce GT 640
GeForce GT 640
NVIDIA GeForce 830A
GeForce 830A

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 1545 votes

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2.5 6 votes

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Questions & comments

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