ATI Radeon HD 2600 XT vs GeForce GT 640 OEM

Place in the ranking	927	1156
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.01
Power efficiency	2.45	1.17
Architecture	Kepler (2012−2018)	TeraScale (2005−2013)
GPU code name	GK107	RV630
Market segment	Desktop	Desktop
Release date	24 April 2012 (12 years ago)	28 June 2007 (17 years ago)
Launch price (MSRP)	no data	$199

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	120
Core clock speed	797 MHz	800 MHz
Number of transistors	1,270 million	390 million
Manufacturing process technology	28 nm	65 nm
Power consumption (TDP)	50 Watt	45 Watt
Texture fill rate	25.50	6.400
Floating-point processing power	0.6121 TFLOPS	0.192 TFLOPS
ROPs	16	4
TMUs	32	8

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 1.0 x16
Length	145 mm	no data
Width	1-slot	1-slot
Supplementary power connectors	None	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	DDR3	GDDR3
Maximum RAM amount	2 GB	256 MB
Memory bus width	128 Bit	128 Bit
Memory clock speed	891 MHz	700 MHz
Memory bandwidth	28.51 GB/s	22.4 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	1x DVI, 1x HDMI, 1x DisplayPort	2x DVI, 1x S-Video
HDMI	+	-

API compatibility

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

DirectX	12 (11_0)	10.0 (10_0)
Shader Model	5.1	4.0
OpenGL	4.6	3.3
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	3.0	-

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	1.70	0.73
Recency	24 April 2012	28 June 2007
Maximum RAM amount	2 GB	256 MB
Chip lithography	28 nm	65 nm
Power consumption (TDP)	50 Watt	45 Watt

GT 640 OEM has a 132.9% higher aggregate performance score, an age advantage of 4 years, a 700% higher maximum VRAM amount, and a 132.1% more advanced lithography process.

ATI HD 2600 XT, on the other hand, has 11.1% lower power consumption.

The GeForce GT 640 OEM is our recommended choice as it beats the Radeon HD 2600 XT in performance tests.

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