GeForce4 420 Go vs Radeon HD 7770

Primary Details

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

Place in performance ranking	566	not rated
Place by popularity	not in top-100	not in top-100
Cost-Effectiveness Evaluation	0.38	no data
Architecture	GCN (2011−2017)	Celsius (1999−2005)
GPU code name	Cape Verde	NV17M
Market segment	Desktop	Laptop
Release date	15 February 2012 (12 years ago)	1 March 2002 (22 years ago)
Launch price (MSRP)	$129.99	no data
Current price	$300 (2.3x MSRP)	no data

Cost-Effectiveness Evaluation

Performance to price ratio. The higher, the better.

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	640	2
Core clock speed	1000 MHz	200 MHz
Boost clock speed	no data	190 MHz
Number of transistors	1,500 million	29 million
Manufacturing process technology	28 nm	150 nm
Power consumption (TDP)	80 Watt	no data
Texture fill rate	40.00	0.8

Form Factor & Compatibility

Information on Radeon HD 7770 and GeForce4 420 Go compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Interface	PCIe 3.0 x16	AGP 4x
Length	210 mm	no data
Width	2-slot	no data
Supplementary power connectors	1x 6-pin	no data

Memory type	GDDR5	DDR
Maximum RAM amount	2 GB	64 MB
Memory bus width	128 Bit	32 Bit
Memory clock speed	4500 MHz	400 MHz
Memory bandwidth	72 GB/s	3.2 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	1x DVI, 1x HDMI, 2x mini-DisplayPort	No outputs
Eyefinity	+	no data
HDMI	+	no data

API Compatibility

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

DirectX	12 (11_1)	8.0
Shader Model	5.1	no data
OpenGL	4.6	1.3
OpenCL	1.2	N/A
Vulkan	1.2.131	N/A

Synthetic benchmark performance

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

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Pros & Cons Summary

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Recency	15 February 2012	1 March 2002
Maximum RAM amount	2 GB	64 MB
Chip lithography	28 nm	150 nm

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

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