GT 640 vs 9800 GX2

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Combined performance score

9800 GX2
2.06

GT 640 outperforms 9800 GX2 by 48% in our combined benchmark results.

General info

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

Place in performance ranking831726
Place by popularitynot in top-100not in top-100
Value for money0.090.19
ArchitectureTesla (2006−2010)Kepler (2012−2018)
GPU code nameG92GK107
Market segmentDesktopDesktop
Release date18 March 2008 (16 years old)5 June 2012 (11 years old)
Launch price (MSRP)$599 $99
Current price$140 (0.2x MSRP)$157 (1.6x MSRP)
Value for money

Performance to price ratio. The higher, the better.

GT 640 has 111% better value for money than 9800 GX2.

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores128384
CUDA cores256 (128 per GPU)no data
Core clock speed600 MHz902 MHz
Number of transistors754 million1,270 million
Manufacturing process technology65 nm28 nm
Power consumption (TDP)197 Watt65 Watt
Maximum GPU temperature105 °Cno data
Texture fill rate76.8 billion/sec28.86
Floating-point performance2x 384.0 gflops692.7 gflops

Size and 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 2.0 x16PCIe 3.0 x16
Length10.5" (26.7 cm)145 mm
Height2-slotno data
Width2-slot1-slot
Supplementary power connectors6-pin & 8-pinNone
SLI options+no data

Memory

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 typeGDDR3DDR3
Maximum RAM amount512 MB2 GB
Memory bus width512 Bit128 Bit
Memory clock speed1000 MHz1782 MHz
Memory bandwidth128 (64 per GPU)28.51 GB/s

Video outputs and ports

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 ConnectorsHDMIDual Link DVI1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support+no data
HDMI++
Maximum VGA resolution2048x1536no data
Audio input for HDMIS/PDIFno data

API support

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

DirectX11.1 (10_0)12 (11_0)
Shader Model4.05.1
OpenGL2.14.6
OpenCL1.11.2
VulkanN/A1.1.126
CUDA+3.0

Synthetic benchmark performance

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


Combined synthetic benchmark score

This is our combined benchmark performance 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.

9800 GX2 2.06
GT 640 3.04
+47.6%

GT 640 outperforms 9800 GX2 by 48% in our combined benchmark results.


Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. 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.

Benchmark coverage: 25%

9800 GX2 797
GT 640 1178
+47.8%

GT 640 outperforms 9800 GX2 by 48% in Passmark.

Gaming performance

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

Advantages and disadvantages


Performance score 2.06 3.04
Recency 18 March 2008 5 June 2012
Cost $599 $99
Maximum RAM amount 512 MB 2 GB
Chip lithography 65 nm 28 nm
Power consumption (TDP) 197 Watt 65 Watt

The GeForce GT 640 is our recommended choice as it beats the GeForce 9800 GX2 in performance tests.


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

User ratings

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


NVIDIA GeForce 9800 GX2
GeForce 9800 GX2
NVIDIA GeForce GT 640
GeForce GT 640

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User ratings: view and submit

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3.3 11 votes

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3.4 1345 votes

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Questions and comments

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