Pentium Gold G6600 vs Core 2 Quad Q8400

Place in the ranking	2266	1700
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	1.30	4.39
Architecture codename	Yorkfield (2007−2009)	Comet Lake (2020)
Release date	19 April 2009 (15 years ago)	30 April 2020 (4 years ago)

Detailed specifications

Core 2 Quad Q8400 and Pentium Gold G6600 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	4
Base clock speed	2.66 GHz	4.2 GHz
Boost clock speed	0.67 GHz	4.2 GHz
Bus rate	1333 MHz	8 GT/s
L1 cache	64 KB (per core)	64K (per core)
L2 cache	4 MB (shared)	256K (per core)
L3 cache	0 KB	4 MB (shared)
Chip lithography	45 nm	14 nm
Die size	2x 82 mm²	no data
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	71 °C	72 °C
Number of transistors	456 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q8400 and Pentium Gold G6600 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	FCLGA775,LGA775	FCLGA1200
Power consumption (TDP)	95 Watt	58 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Pentium Gold G6600. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	-	no data
Turbo Boost Max 3.0	no data	-
FSB parity	-	no data

Security technologies

Core 2 Quad Q8400 and Pentium Gold G6600 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Pentium Gold G6600 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Pentium Gold G6600. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4-2666
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	41.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	On certain motherboards (Chipset feature)	Intel UHD Graphics 630
Max video memory	no data	64 GB
Quick Sync Video	-	+
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.1 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core 2 Quad Q8400 and Pentium Gold G6600 integrated GPUs.

Number of displays supported

no data

Graphics image quality

Maximum display resolutions supported by Core 2 Quad Q8400 and Pentium Gold G6600 integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096x2160@30Hz
Max resolution over eDP	no data	4096x2304@60Hz
Max resolution over DisplayPort	no data	4096x2304@60Hz

Graphics API support

APIs supported by Core 2 Quad Q8400 and Pentium Gold G6600 integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.5

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Pentium Gold G6600.

PCIe version	2.0	3.0
PCI Express lanes	no data	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 2 Quad Q8400 1.30

Pentium Gold G6600 2.69
+107%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Core 2 Quad Q8400 2067

Pentium Gold G6600 4273
+107%

Gaming performance

Pros & cons summary

Performance score	1.30	2.69
Recency	19 April 2009	30 April 2020
Physical cores	4	2
Chip lithography	45 nm	14 nm
Power consumption (TDP)	95 Watt	58 Watt

Core 2 Quad Q8400 has 100% more physical cores.

Pentium Gold G6600, on the other hand, has a 106.9% higher aggregate performance score, an age advantage of 11 years, a 221.4% more advanced lithography process, and 63.8% lower power consumption.

The Pentium Gold G6600 is our recommended choice as it beats the Core 2 Quad Q8400 in performance tests.

Should you still have questions on choice between Core 2 Quad Q8400 and Pentium Gold G6600, ask them in Comments section, and we shall answer.