Opteron 844 vs Pentium G645T

Primary details

Comparing Pentium G645T and Opteron 844 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2641	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	2.07	no data
Architecture codename	Sandy Bridge (2011−2013)	SledgeHammer (2003−2005)
Release date	2 September 2012 (12 years ago)	June 2003 (21 year ago)

Detailed specifications

Pentium G645T and Opteron 844 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)	1 (Single-Core)
Threads	2	1
Base clock speed	2.5 GHz	no data
Boost clock speed	2.5 GHz	1.8 GHz
Bus rate	5 GT/s	no data
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	3 MB (shared)	0 KB
Chip lithography	32 nm	130 nm
Die size	131 mm2	193 mm2
Maximum core temperature	65 °C	no data
Number of transistors	504 million	106 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium G645T and Opteron 844 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	8
Socket	FCLGA1155	940
Power consumption (TDP)	35 Watt	85 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G645T and Opteron 844. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Pentium G645T and Opteron 844 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 G645T and Opteron 844 are enumerated here.

VT-d	-	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G645T and Opteron 844. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	17 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for 2nd Generation Intel Processors	no data
Graphics max frequency	1.1 GHz	no data

Graphics interfaces

Available interfaces and connections of Pentium G645T and Opteron 844 integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Pentium G645T and Opteron 844.

PCIe version	2.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Physical cores	2	1
Threads	2	1
Chip lithography	32 nm	130 nm
Power consumption (TDP)	35 Watt	85 Watt

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