ATI Radeon X1550 vs Quadro K620

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	594	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.39	no data
Power efficiency	8.95	no data
Architecture	Maxwell (2014−2017)	Ultra-Threaded SE (2005−2007)
GPU code name	GM107	RV516
Market segment	Workstation	Desktop
Release date	22 July 2014 (10 years ago)	2007 (17 years ago)
Launch price (MSRP)	$189.89	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

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	no data
Core clock speed	1058 MHz	550 MHz
Boost clock speed	1124 MHz	no data
Number of transistors	1,870 million	105 million
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	41 Watt	27 Watt
Texture fill rate	26.98	2.200
Floating-point processing power	0.8632 TFLOPS	no data
ROPs	16	4
TMUs	24	4

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 2.0 x16	PCIe 1.0 x16
Length	160 mm	no data
Width	1" (2.5 cm)	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	128 Bit	DDR2
Maximum RAM amount	2 GB	256 MB
Memory bus width	128 Bit	128 Bit
Memory clock speed	900 MHz	800 MBps
Memory bandwidth	Up to 29 GB/s	12.8 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 DisplayPort	1x DVI, 1x VGA, 1x S-Video
Number of simultaneous displays	4	no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Vision Pro	+	no data
Mosaic	+	no data
nView Desktop Management	+	no data

API compatibility

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

DirectX	12	9.0c (9_3)
Shader Model	5.1	3.0
OpenGL	4.5	2.1
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	5.0	-

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

---

---

Pros & cons summary

---

Maximum RAM amount	2 GB	256 MB
Chip lithography	28 nm	90 nm
Power consumption (TDP)	41 Watt	27 Watt

---

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

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.

---