GeForce GT 640M Mac Edition vs Radeon HD 6450 GDDR5

Place in the ranking	1118	1097
Place by popularity	not in top-100	not in top-100
Power efficiency	2.44	2.23
Architecture	Terascale 2 (2009−2015)	Kepler (2012−2018)
GPU code name	Caicos	GK107
Market segment	Desktop	Laptop
Release date	18 April 2011 (13 years ago)	3 February 2013 (11 years ago)

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 cores	160	384
Core clock speed	750 MHz	745 MHz
Number of transistors	no data	1,270 million
Manufacturing process technology	40 nm	28 nm
Power consumption (TDP)	27 Watt	32 Watt
Texture fill rate	no data	23.84
Floating-point processing power	no data	0.5722 TFLOPS
ROPs	no data	8
TMUs	no data	32

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).

Interface

no data

PCIe 3.0 x16

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	GDDR5
Maximum RAM amount	1 GB	512 MB
Memory bus width	64 Bit	64 Bit
Memory clock speed	900 MHz	1250 MHz
Memory bandwidth	no data	40 GB/s
Shared memory	-	-

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

no data

No outputs

API compatibility

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

DirectX	11	12 (11_0)
Shader Model	no data	5.1
OpenGL	no data	4.6
OpenCL	no data	1.2
Vulkan	-	1.1.126
CUDA	-	3.0

Gaming performance

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

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p	7 +0%	7−8 +0%
Full HD	15 −6.7%	16−18 +6.7%
1200p	5 +0%	5−6 +0%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

3−4

+0%

3−4
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey	5−6 +0%	5−6 +0%
Call of Duty: Modern Warfare	4−5 +0%	4−5 +0%
Cyberpunk 2077	3−4 +0%	3−4 +0%
Far Cry 5	1−2 +0%	1−2 +0%
Far Cry New Dawn	2−3 +0%	2−3 +0%
Hitman 3	5−6 +0%	5−6 +0%
Horizon Zero Dawn	12−14 −7.7%	14−16 +7.7%
Red Dead Redemption 2	1−2 +0%	1−2 +0%
Shadow of the Tomb Raider	7−8 +0%	7−8 +0%
Watch Dogs: Legion	30−35 +6.7%	30−33 −6.7%

Full HD
High Preset

Assassin's Creed Odyssey	5−6 +0%	5−6 +0%
Call of Duty: Modern Warfare	4−5 +0%	4−5 +0%
Cyberpunk 2077	3−4 +0%	3−4 +0%
Far Cry 5	1−2 +0%	1−2 +0%
Far Cry New Dawn	2−3 +0%	2−3 +0%
Hitman 3	5−6 +0%	5−6 +0%
Horizon Zero Dawn	12−14 −7.7%	14−16 +7.7%
Red Dead Redemption 2	1−2 +0%	1−2 +0%
Shadow of the Tomb Raider	7−8 +0%	7−8 +0%
The Witcher 3: Wild Hunt	10−11 +0%	10−11 +0%
Watch Dogs: Legion	30−35 +6.7%	30−33 −6.7%

Full HD
Ultra Preset

Assassin's Creed Odyssey	5−6 +0%	5−6 +0%
Call of Duty: Modern Warfare	4−5 +0%	4−5 +0%
Cyberpunk 2077	3−4 +0%	3−4 +0%
Far Cry 5	1−2 +0%	1−2 +0%
Hitman 3	5−6 +0%	5−6 +0%
Horizon Zero Dawn	12−14 −7.7%	14−16 +7.7%
Shadow of the Tomb Raider	7−8 +0%	7−8 +0%
The Witcher 3: Wild Hunt	10−11 +0%	10−11 +0%
Watch Dogs: Legion	30−35 +6.7%	30−33 −6.7%

Full HD
Epic Preset

Red Dead Redemption 2

1−2

+0%

1−2
+0%

1440p
High Preset

Battlefield 5	1−2 +0%	1−2 +0%
Far Cry New Dawn	1−2 +0%	1−2 +0%

1440p
Ultra Preset

Assassin's Creed Odyssey	1−2 +0%	1−2 +0%
Cyberpunk 2077	1−2 +0%	1−2 +0%
Far Cry 5	1−2 +0%	1−2 +0%
Hitman 3	7−8 +0%	7−8 +0%
Horizon Zero Dawn	4−5 +0%	4−5 +0%
The Witcher 3: Wild Hunt	0−1	0−1
Watch Dogs: Legion	4−5 +0%	4−5 +0%

1440p
Epic Preset

Red Dead Redemption 2

3−4

+0%

3−4
+0%

4K
High Preset

Far Cry New Dawn

0−1

4K
Ultra Preset

Assassin's Creed Odyssey	1−2 +0%	1−2 +0%
Assassin's Creed Valhalla	0−1	0−1
Call of Duty: Modern Warfare	0−1	0−1
Far Cry 5	0−1	0−1

4K
Epic Preset

Red Dead Redemption 2

2−3

+0%

2−3
+0%

This is how HD 6450 GDDR5 and GT 640M Mac Edition compete in popular games:

A tie in 900p
GT 640M Mac Edition is 7% faster in 1080p
A tie in 1200p

Pros & cons summary

Performance score	0.96	1.04
Recency	18 April 2011	3 February 2013
Maximum RAM amount	1 GB	512 MB
Chip lithography	40 nm	28 nm
Power consumption (TDP)	27 Watt	32 Watt

HD 6450 GDDR5 has a 100% higher maximum VRAM amount, and 18.5% lower power consumption.

GT 640M Mac Edition, on the other hand, has a 8.3% higher aggregate performance score, an age advantage of 1 year, and a 42.9% more advanced lithography process.

Given the minimal performance differences, no clear winner can be declared between Radeon HD 6450 GDDR5 and GeForce GT 640M Mac Edition.

Be aware that Radeon HD 6450 GDDR5 is a desktop card while GeForce GT 640M Mac Edition is a notebook one.

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