HD Graphics P4600 vs ATI Radeon HD 2900 PRO

Place in the ranking	953	965
Place by popularity	not in top-100	not in top-100
Power efficiency	0.57	1.30
Architecture	TeraScale (2005−2013)	Generation 7.5 (2013)
GPU code name	R600	Haswell GT2
Market segment	Desktop	Desktop
Release date	12 December 2007 (16 years ago)	1 June 2013 (11 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	160
Core clock speed	600 MHz	350 MHz
Boost clock speed	no data	1200 MHz
Number of transistors	720 million	392 million
Manufacturing process technology	80 nm	22 nm
Power consumption (TDP)	200 Watt	84 Watt
Texture fill rate	9.600	24.00
Floating-point processing power	0.384 TFLOPS	0.384 TFLOPS
ROPs	16	2
TMUs	16	20

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	IGP
Length	241 mm	no data
Width	2-slot	IGP
Supplementary power connectors	1x 8-pin	no data

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	System Shared
Maximum RAM amount	512 MB	System Shared
Memory bus width	256 Bit	System Shared
Memory clock speed	800 MHz	System Shared
Memory bandwidth	51.2 GB/s	no data

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

No outputs

API compatibility

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

DirectX	10.0 (10_0)	12 (11_1)
Shader Model	4.0	5.1
OpenGL	3.3	4.3
OpenCL	N/A	1.2
Vulkan	N/A	1.1.80

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.

ATI HD 2900 PRO 1.63
+3.8%

HD Graphics P4600 1.57

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.

ATI HD 2900 PRO 627
+3.6%

HD Graphics P4600 605

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	1.63	1.57
Recency	12 December 2007	1 June 2013
Chip lithography	80 nm	22 nm
Power consumption (TDP)	200 Watt	84 Watt

ATI HD 2900 PRO has a 3.8% higher aggregate performance score.

HD Graphics P4600, on the other hand, has an age advantage of 5 years, a 263.6% more advanced lithography process, and 138.1% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Radeon HD 2900 PRO and HD Graphics P4600.

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