Pentium D 820 vs A10-7850K

Primary details

Comparing A10-7850K and Pentium D 820 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1853	3084
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.31	no data
Market segment	Desktop processor	Desktop processor
Series	AMD A-Series (Desktop)	Pentium D
Power efficiency	2.13	0.31
Architecture codename	Godaveri (2014−2016)	Smithfield (2005)
Release date	14 January 2014 (10 years ago)	May 2005 (19 years ago)
Launch price (MSRP)	$173	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

A10-7850K and Pentium D 820 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	2
Base clock speed	3.7 GHz	2.8 GHz
Boost clock speed	4 GHz	2.8 GHz
Bus rate	no data	800 MHz
L1 cache	256 KB	28 KB
L2 cache	4096 KB	2 MB
L3 cache	0 KB	0 KB
Chip lithography	28 nm	90 nm
Die size	246 mm2	206 mm2
Maximum core temperature	72 °C	64 °C
Maximum case temperature (TCase)	74 °C	no data
Number of transistors	1,178 million	169 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-
VID voltage range	no data	1.2V-1.4V

Compatibility

Information on A10-7850K and Pentium D 820 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	1	2
Socket	FM2+	PLGA775
Power consumption (TDP)	95 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A10-7850K and Pentium D 820. You'll probably need this information if you require some particular technology.

Instruction set extensions	SSE1-4A, AVX, FM4A, VT	no data
AES-NI	+	-
FMA	FMA4	-
AVX	+	-
FRTC	+	-
FreeSync	+	-
DualGraphics	+	-
TrueAudio	+	-
PowerNow	+	-
PowerGating	+	-
Out-of-band client management	+	-
VirusProtect	+	-
HSA	+	-
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	no data	32 Bit
FSB parity	no data	-

Security technologies

A10-7850K and Pentium D 820 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 A10-7850K and Pentium D 820 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 A10-7850K and Pentium D 820. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-2133	DDR1, DDR2, DDR3
Max memory channels	2	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	AMD Radeon R7 Graphics	no data
iGPU core count	8	no data
Number of pipelines	512	no data
Enduro	+	-
Switchable graphics	+	-
UVD	+	-
VCE	+	-

Graphics interfaces

Available interfaces and connections of A10-7850K and Pentium D 820 integrated GPUs.

DisplayPort	+	-
HDMI	+	-

Graphics API support

APIs supported by A10-7850K and Pentium D 820 integrated GPUs, sometimes API versions are included.

DirectX	DirectX® 12	no data
Vulkan	+	-

Peripherals

Specifications and connection of peripherals supported by A10-7850K and Pentium D 820.

PCIe version

3.0

no data

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	2.14	0.31
Physical cores	4	2
Threads	4	2
Chip lithography	28 nm	90 nm

---

Should you still have questions on choice between A10-7850K and Pentium D 820, 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.

---