Pentium 977 vs Core i5-660

Primary details

Comparing Core i5-660 and Pentium 977 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2036	2574
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.10	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Pentium
Architecture codename	Clarkdale (2010−2011)	Sandy Bridge (2011−2013)
Release date	7 January 2010 (14 years ago)	1 January 2012 (12 years ago)
Launch price (MSRP)	$70	$134
Current price	$83 (1.2x MSRP)	$457 (3.4x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-660 and Pentium 977 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)	2 (Dual-core)
Threads	4	2
Base clock speed	3.33 GHz	1.4 GHz
Boost clock speed	3.6 GHz	1.4 GHz
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	256K (per core)
L3 cache	4 MB (shared)	2 MB (shared)
Chip lithography	32 nm	32 nm
Die size	81 mm2	131 mm2
Maximum core temperature	73 °C	100 °C
Number of transistors	382 million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core i5-660 and Pentium 977 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	1
Socket	FCLGA1156	FCBGA1023
Power consumption (TDP)	73 Watt	17 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-660 and Pentium 977. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	-
FMA	no data	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	no data	-
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Demand Based Switching	-	-
PAE	36 Bit	no data
FDI	+	+
Fast Memory Access	no data	+
Status	Discontinued	Discontinued

Security technologies

Core i5-660 and Pentium 977 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
Anti-Theft	no data	-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-660 and Pentium 977 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-660 and Pentium 977. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16.38 GB	16.38 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	21.3 GB/s
ECC memory support	no data	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	Intel® HD Graphics for 2nd Generation Intel® Processors
Clear Video HD	+	-
Graphics max frequency	no data	1 GHz

Graphics interfaces

Available interfaces and connections of Core i5-660 and Pentium 977 integrated GPUs.

Number of displays supported	2	2
eDP	no data	+
DisplayPort	no data	+
HDMI	no data	+
SDVO	no data	+
CRT	no data	+

Peripherals

Specifications and connection of peripherals supported by Core i5-660 and Pentium 977.

PCIe version	2.0	2.0
PCI Express lanes	16	16

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.

Core i5-660 outperforms Pentium 977 by 108% based on our aggregate benchmark results.

---

Pros & cons summary

---

Performance score	1.54	0.74
Recency	7 January 2010	1 January 2012
Threads	4	2
Cost	$70	$134
Power consumption (TDP)	73 Watt	17 Watt

---

Should you still have questions on choice between Core i5-660 and Pentium 977, 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.

---