GeForce GT 640 vs GTX 650

Place in performance ranking	617	727
Place by popularity	55	not in top-100
Cost-effectiveness evaluation	0.35	0.20
Architecture	Kepler (2012−2018)	Kepler (2012−2018)
GPU code name	GK107	GK107
Market segment	Desktop	Desktop
Release date	6 September 2012 (11 years ago)	5 June 2012 (11 years ago)
Launch price (MSRP)	$109	$99
Current price	$207 (1.9x MSRP)	$157 (1.6x MSRP)

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GTX 650 has 75% better value for money than GT 640.

Detailed specifications

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 cores	384	384
CUDA cores	384	no data
Core clock speed	1058 MHz	902 MHz
Number of transistors	1,270 million	1,270 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	64 Watt	65 Watt
Texture fill rate	33.9 billion/sec	28.86
Floating-point performance	812.5 gflops	692.7 gflops

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).

Bus support	PCI Express 3.0	no data
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Length	5.70" (14.5 cm)	145 mm
Height	4.38" (11.1 cm)	no data
Width	2-slot	1-slot
Supplementary power connectors	One 6-pin	None

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 type	GDDR5	DDR3
Maximum RAM amount	2 GB	2 GB
Memory bus width	128-bit GDDR5	128 Bit
Memory clock speed	5.0 GB/s	1782 MHz
Memory bandwidth	80.0 GB/s	28.51 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 Connectors	One Dual Link DVI-I, One Dual Link DVI-D, One Mini HDMI	1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support	4 displays	no data
HDMI	+	+
HDCP	+	no data
Maximum VGA resolution	2048x1536	no data
Audio input for HDMI	Internal	no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray	+	no data
3D Gaming	+	no data
3D Vision	+	no data

API compatibility

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

DirectX	12 (11_0)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.3	4.6
OpenCL	1.2	1.2
Vulkan	1.1.126	1.1.126
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.

GTX 650 4.52
+48.7%

GT 640 3.04

GTX 650 outperforms GT 640 by 49% based on our aggregated 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%

GTX 650 1749
+48.6%

GT 640 1177

GTX 650 outperforms GT 640 by 49% in Passmark.

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

Benchmark coverage: 14%

GTX 650 2270
+45.5%

GT 640 1560

GTX 650 outperforms GT 640 by 46% in 3DMark Fire Strike Graphics.

GeekBench 5 OpenCL

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.

Benchmark coverage: 9%

GTX 650 4480
+19.5%

GT 640 3750

GTX 650 outperforms GT 640 by 19% in GeekBench 5 OpenCL.

GeekBench 5 Vulkan

Benchmark coverage: 5%

GTX 650 4584
+19.3%

GT 640 3841

GTX 650 outperforms GT 640 by 19% in GeekBench 5 Vulkan.

GeekBench 5 CUDA

Benchmark coverage: 4%

GTX 650 3424
+20%

GT 640 2853

GTX 650 outperforms GT 640 by 20% in GeekBench 5 CUDA.

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.

Benchmark coverage: 4%

GTX 650 14
+40%

GT 640 10

GTX 650 outperforms GT 640 by 40% in Octane Render OctaneBench.