ATI Radeon HD 2900 GT vs HD 7640G

Place in the ranking	1054	1151
Place by popularity	not in top-100	not in top-100
Power efficiency	2.35	0.35
Architecture	TeraScale 3 (2010−2013)	TeraScale (2005−2013)
GPU code name	Devastator Lite	R600
Market segment	Desktop	Desktop
Release date	15 May 2012 (12 years ago)	6 November 2007 (17 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	256	240
Core clock speed	496 MHz	601 MHz
Boost clock speed	685 MHz	no data
Number of transistors	1,303 million	720 million
Manufacturing process technology	32 nm	80 nm
Power consumption (TDP)	35 Watt	150 Watt
Texture fill rate	10.96	7.212
Floating-point processing power	0.3507 TFLOPS	0.2885 TFLOPS
ROPs	8	12
TMUs	16	12

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	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	System Shared	GDDR3
Maximum RAM amount	System Shared	256 MB
Memory bus width	System Shared	256 Bit
Memory clock speed	System Shared	800 MHz
Memory bandwidth	no data	51.2 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

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)	10.0 (10_0)
Shader Model	5.0	4.0
OpenGL	4.4	3.3
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 7640G 1.19
+56.6%

ATI HD 2900 GT 0.76

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 7640G 459
+57.2%

ATI HD 2900 GT 292

Gaming performance

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

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

3−4
+200%

1−2

−200%

Full HD
Medium Preset

Assassin's Creed Odyssey	5−6 +66.7%	3−4 −66.7%
Call of Duty: Modern Warfare	4−5 +100%	2−3 −100%
Cyberpunk 2077	3−4 +200%	1−2 −200%
Far Cry 5	1−2	0−1
Far Cry New Dawn	3−4 +200%	1−2 −200%
Forza Horizon 4	1−2	0−1
Hitman 3	6−7 +100%	3−4 −100%
Horizon Zero Dawn	14−16 +75%	8−9 −75%
Red Dead Redemption 2	2−3 +100%	1−2 −100%
Shadow of the Tomb Raider	8−9 +60%	5−6 −60%
Watch Dogs: Legion	30−35 +77.8%	18−20 −77.8%

Full HD
High Preset

Assassin's Creed Odyssey	5−6 +66.7%	3−4 −66.7%
Call of Duty: Modern Warfare	4−5 +100%	2−3 −100%
Cyberpunk 2077	3−4 +200%	1−2 −200%
Far Cry 5	1−2	0−1
Far Cry New Dawn	3−4 +200%	1−2 −200%
Forza Horizon 4	1−2	0−1
Hitman 3	6−7 +100%	3−4 −100%
Horizon Zero Dawn	14−16 +75%	8−9 −75%
Red Dead Redemption 2	2−3 +100%	1−2 −100%
Shadow of the Tomb Raider	8−9 +60%	5−6 −60%
The Witcher 3: Wild Hunt	10−12 +57.1%	7−8 −57.1%
Watch Dogs: Legion	30−35 +77.8%	18−20 −77.8%

Full HD
Ultra Preset

Assassin's Creed Odyssey	5−6 +66.7%	3−4 −66.7%
Call of Duty: Modern Warfare	4−5 +100%	2−3 −100%
Cyberpunk 2077	3−4 +200%	1−2 −200%
Far Cry 5	1−2	0−1
Forza Horizon 4	1−2	0−1
Hitman 3	6−7 +100%	3−4 −100%
Horizon Zero Dawn	14−16 +75%	8−9 −75%
Shadow of the Tomb Raider	8−9 +60%	5−6 −60%
The Witcher 3: Wild Hunt	10−12 +57.1%	7−8 −57.1%
Watch Dogs: Legion	30−35 +77.8%	18−20 −77.8%

Full HD
Epic Preset

Red Dead Redemption 2

2−3
+100%

1−2

−100%

1440p
High Preset

Battlefield 5	1−2	0−1
Far Cry New Dawn	2−3 +100%	1−2 −100%

1440p
Ultra Preset

Assassin's Creed Odyssey	1−2	0−1
Call of Duty: Modern Warfare	0−1	0−1
Cyberpunk 2077	1−2	0−1
Far Cry 5	1−2	0−1
Hitman 3	7−8 +75%	4−5 −75%
Horizon Zero Dawn	4−5 +100%	2−3 −100%
The Witcher 3: Wild Hunt	0−1	0−1
Watch Dogs: Legion	5−6 +66.7%	3−4 −66.7%

1440p
Epic Preset

Red Dead Redemption 2

4−5
+100%

2−3

−100%

4K
High Preset

Far Cry New Dawn

0−1

4K
Ultra Preset

Assassin's Creed Odyssey	1−2	0−1
Assassin's Creed Valhalla	1−2	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
+100%

1−2

−100%

Pros & cons summary

Performance score	1.19	0.76
Recency	15 May 2012	6 November 2007
Chip lithography	32 nm	80 nm
Power consumption (TDP)	35 Watt	150 Watt

HD 7640G has a 56.6% higher aggregate performance score, an age advantage of 4 years, a 150% more advanced lithography process, and 328.6% lower power consumption.

The Radeon HD 7640G is our recommended choice as it beats the Radeon HD 2900 GT in performance tests.

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