GeForce 7900 GT vs Radeon HD 6520G

Place in the ranking	1146	1179
Place by popularity	not in top-100	not in top-100
Power efficiency	1.52	0.96
Architecture	TeraScale 2 (2009−2015)	Curie (2003−2013)
GPU code name	Sumo	G71
Market segment	Desktop	Desktop
Release date	7 December 2011 (12 years ago)	9 March 2006 (18 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	320	no data
Core clock speed	400 MHz	450 MHz
Number of transistors	1,178 million	278 million
Manufacturing process technology	32 nm	90 nm
Power consumption (TDP)	35 Watt	48 Watt
Texture fill rate	6.400	10.80
Floating-point processing power	0.256 TFLOPS	no data
ROPs	8	16
TMUs	16	24

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	IGP	PCIe 1.0 x16
Width	IGP	1-slot
Supplementary power connectors	no data	1x 6-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	System Shared	GDDR3
Maximum RAM amount	System Shared	256 MB
Memory bus width	System Shared	256 Bit
Memory clock speed	System Shared	660 MHz
Memory bandwidth	no data	42.24 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 outputs

2x DVI, 1x S-Video

API compatibility

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

DirectX	11.2 (11_0)	9.0c (9_3)
Shader Model	5.0	3.0
OpenGL	4.4	2.1
OpenCL	1.2	N/A
Vulkan	N/A	N/A

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.

HD 6520G 0.77
+14.9%

7900 GT 0.67

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.

HD 6520G 299
+15.9%

7900 GT 258

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	8 +33.3%	6−7 −33.3%
Full HD	6 +20%	5−6 −20%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

3−4
+50%

2−3

−50%

Full HD
Medium Preset

Assassin's Creed Odyssey	5−6 +25%	4−5 −25%
Call of Duty: Modern Warfare	3−4 +50%	2−3 −50%
Cyberpunk 2077	3−4 +50%	2−3 −50%
Far Cry 5	0−1	0−1
Far Cry New Dawn	1−2	0−1
Hitman 3	5−6 +25%	4−5 −25%
Horizon Zero Dawn	12−14 +20%	10−11 −20%
Red Dead Redemption 2	0−1	0−1
Shadow of the Tomb Raider	6−7 +20%	5−6 −20%
Watch Dogs: Legion	30−35 +29.2%	24−27 −29.2%

Full HD
High Preset

Assassin's Creed Odyssey	5−6 +25%	4−5 −25%
Call of Duty: Modern Warfare	3−4 +50%	2−3 −50%
Cyberpunk 2077	3−4 +50%	2−3 −50%
Far Cry 5	0−1	0−1
Far Cry New Dawn	1−2	0−1
Hitman 3	5−6 +25%	4−5 −25%
Horizon Zero Dawn	12−14 +20%	10−11 −20%
Red Dead Redemption 2	0−1	0−1
Shadow of the Tomb Raider	6−7 +20%	5−6 −20%
The Witcher 3: Wild Hunt	10−11 +25%	8−9 −25%
Watch Dogs: Legion	30−35 +29.2%	24−27 −29.2%

Full HD
Ultra Preset

Assassin's Creed Odyssey	5−6 +25%	4−5 −25%
Call of Duty: Modern Warfare	3−4 +50%	2−3 −50%
Cyberpunk 2077	3−4 +50%	2−3 −50%
Far Cry 5	0−1	0−1
Hitman 3	5−6 +25%	4−5 −25%
Horizon Zero Dawn	12−14 +20%	10−11 −20%
Shadow of the Tomb Raider	6−7 +20%	5−6 −20%
The Witcher 3: Wild Hunt	10−11 +25%	8−9 −25%
Watch Dogs: Legion	30−35 +29.2%	24−27 −29.2%

Full HD
Epic Preset

Red Dead Redemption 2

0−1

1440p
High Preset

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

1440p
Ultra Preset

Assassin's Creed Odyssey	0−1	0−1
Cyberpunk 2077	1−2	0−1
Far Cry 5	1−2	0−1
Hitman 3	7−8 +16.7%	6−7 −16.7%
Horizon Zero Dawn	4−5 +33.3%	3−4 −33.3%
The Witcher 3: Wild Hunt	0−1	0−1
Watch Dogs: Legion	2−3 +100%	1−2 −100%

1440p
Epic Preset

Red Dead Redemption 2

3−4
+50%

2−3

−50%

4K
High Preset

Far Cry New Dawn

0−1

4K
Ultra Preset

Assassin's Creed Odyssey	1−2	0−1
Assassin's Creed Valhalla	0−1	0−1
Far Cry 5	0−1	0−1

4K
Epic Preset

Red Dead Redemption 2

2−3
+100%

1−2

−100%

This is how HD 6520G and 7900 GT compete in popular games:

HD 6520G is 33% faster in 900p
HD 6520G is 20% faster in 1080p

Pros & cons summary

Performance score	0.77	0.67
Recency	7 December 2011	9 March 2006
Chip lithography	32 nm	90 nm
Power consumption (TDP)	35 Watt	48 Watt

HD 6520G has a 14.9% higher aggregate performance score, an age advantage of 5 years, a 181.3% more advanced lithography process, and 37.1% lower power consumption.

The Radeon HD 6520G is our recommended choice as it beats the GeForce 7900 GT in performance tests.

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