Radeon RX 580 2048SP vs GeForce GT 745A

Place in the ranking	748	275
Place by popularity	not in top-100	56
Architecture	Kepler (2012−2018)	GCN 4.0 (2016−2020)
GPU code name	GK107	Polaris 20
Market segment	Desktop	Desktop
Release date	26 August 2013 (11 years ago)	15 October 2018 (5 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	384	2048
Core clock speed	837 MHz	1168 MHz
Boost clock speed	915 MHz	1284 MHz
Number of transistors	1,270 million	5,700 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	33 Watt	150 Watt
Texture fill rate	29.28	164.4
Floating-point processing power	0.7027 gflops	5.259 gflops
ROPs	16	32
TMUs	32	128

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	PCIe 3.0 x16	PCIe 3.0 x16
Length	no data	241 mm
Width	MXM Module	2-slot
Supplementary power connectors	no data	1x 8-pin

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	DDR3	GDDR5
Maximum RAM amount	2 GB	8 GB
Memory bus width	128 Bit	256 Bit
Memory clock speed	1800 MHz	7000 MHz
Memory bandwidth	28.8 GB/s	224.0 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	No outputs	1x DVI, 1x HDMI, 3x DisplayPort
HDMI	-	+

API compatibility

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

DirectX	12 (11_0)	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.6	4.6
OpenCL	1.2	2.0
Vulkan	1.1.126	1.2.131
CUDA	3.0	-

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 745A 3.22

RX 580 2048SP 19.95
+520%

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 745A 1240

RX 580 2048SP 7696
+521%

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	3.22	19.95
Recency	26 August 2013	15 October 2018
Maximum RAM amount	2 GB	8 GB
Chip lithography	28 nm	14 nm
Power consumption (TDP)	33 Watt	150 Watt

GT 745A has 354.5% lower power consumption.

RX 580 2048SP, on the other hand, has a 519.6% higher aggregate performance score, an age advantage of 5 years, a 300% higher maximum VRAM amount, and a 100% more advanced lithography process.

The Radeon RX 580 2048SP is our recommended choice as it beats the GeForce GT 745A in performance tests.

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