A4-5100 vs Pentium D 820

Primary details

Comparing Pentium D 820 and A4-5100 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	3084	2564
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	Pentium D	AMD A-Series
Power efficiency	0.31	5.36
Architecture codename	Smithfield (2005)	Kabini (2013−2014)
Release date	May 2005 (19 years ago)	4 November 2013 (11 years ago)

Detailed specifications

Pentium D 820 and A4-5100 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	4 (Quad-Core)
Threads	2	4
Base clock speed	2.8 GHz	no data
Boost clock speed	2.8 GHz	1.55 GHz
Bus rate	800 MHz	no data
L1 cache	28 KB	no data
L2 cache	2 MB	2048 KB
L3 cache	0 KB	no data
Chip lithography	90 nm	28 nm
Die size	206 mm2	107 mm2
Maximum core temperature	64 °C	no data
Maximum case temperature (TCase)	no data	90 °C
Number of transistors	169 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.2V-1.4V	no data

Compatibility

Information on Pentium D 820 and A4-5100 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2	1
Socket	PLGA775	FT3
Power consumption (TDP)	95 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 820 and A4-5100. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX
AES-NI	-	+
FMA	-	FMA4
AVX	-	+
PowerNow	-	+
PowerGating	-	+
VirusProtect	-	+
Enhanced SpeedStep (EIST)	-	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Demand Based Switching	-	no data
PAE	32 Bit	no data
FSB parity	-	no data

Security technologies

Pentium D 820 and A4-5100 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 820 and A4-5100 are enumerated here.

AMD-V	-	+
VT-d	-	no data
VT-x	-	no data
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 820 and A4-5100. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR3
Max memory channels	no data	1

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon HD 8330
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Pentium D 820 and A4-5100 integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Pentium D 820 and A4-5100 integrated GPUs, sometimes API versions are included.

DirectX	no data	DirectX® 12
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by Pentium D 820 and A4-5100.

PCIe version	no data	2.0
PCI Express lanes	no data	8

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

Combined synthetic benchmark score

This is our combined benchmark performance rating. 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.

---

Pros & cons summary

---

Performance score	0.31	0.85
Physical cores	2	4
Threads	2	4
Chip lithography	90 nm	28 nm
Power consumption (TDP)	95 Watt	15 Watt

---

Should you still have questions on choice between Pentium D 820 and A4-5100, 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 CPU.

---