Radeon RX 550X vs GeForce 7900 GTX

Place in the ranking	1101	585
Place by popularity	not in top-100	not in top-100
Power efficiency	0.82	8.21
Architecture	Curie (2003−2013)	GCN 4.0 (2016−2020)
GPU code name	G71	Lexa
Market segment	Desktop	Desktop
Release date	9 March 2006 (18 years ago)	16 December 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	no data	512
Core clock speed	650 MHz	1100 MHz
Boost clock speed	no data	1183 MHz
Number of transistors	278 million	2,200 million
Manufacturing process technology	90 nm	14 nm
Power consumption (TDP)	84 Watt	50 Watt
Texture fill rate	15.60	37.86
Floating-point processing power	no data	1.211 TFLOPS
ROPs	16	16
TMUs	24	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	PCIe 1.0 x16	PCIe 3.0 x8
Length	no data	145 mm
Width	1-slot	2-slot
Supplementary power connectors	1x 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	GDDR3	GDDR5
Maximum RAM amount	512 MB	4 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	800 MHz	1500 MHz
Memory bandwidth	51.2 GB/s	96 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	2x DVI, 1x S-Video	1x DVI, 1x HDMI, 1x DisplayPort
HDMI	-	+

API compatibility

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

DirectX	9.0c (9_3)	12 (12_0)
Shader Model	3.0	6.4
OpenGL	2.1	4.6
OpenCL	N/A	2.0
Vulkan	N/A	1.2.131

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.

7900 GTX 1.00

RX 550X 5.94
+494%

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.

7900 GTX 387

RX 550X 2291
+492%

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	1.00	5.94
Recency	9 March 2006	16 December 2018
Maximum RAM amount	512 MB	4 GB
Chip lithography	90 nm	14 nm
Power consumption (TDP)	84 Watt	50 Watt

RX 550X has a 494% higher aggregate performance score, an age advantage of 12 years, a 700% higher maximum VRAM amount, a 542.9% more advanced lithography process, and 68% lower power consumption.

The Radeon RX 550X is our recommended choice as it beats the GeForce 7900 GTX in performance tests.

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