Intel Core 2 Extreme QX9770 vs Intel Core i5-661

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CPU comparison with benchmarks


Intel Core 2 Extreme QX9770 CPU1 vs CPU2 Intel Core i5-661
Intel Core 2 Extreme QX9770 Intel Core i5-661

CPU comparison

In this CPU comparison, we compare the Intel Core 2 Extreme QX9770 and the Intel Core i5-661 and use benchmarks to check which processor is faster.

We compare the Intel Core 2 Extreme QX9770 4 core processor released in Q1/2008 with the Intel Core i5-661 which has 2 CPU cores and was introduced in Q1/2010.
Intel Core2 Extreme (7) Family Intel Core i5 (331)
Intel Core 2 Extreme QX9000 (3) CPU group Intel Core i5 600 (6)
2 Generation 1
Yorkfield (Penryn) Architecture Clarkdale
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core 2 Extreme QX9770 is a 4 core processor with a clock frequency of 3.20 GHz. The processor can compute 4 threads at the same time. The Intel Core i5-661 clocks with 3.33 GHz (3.60 GHz), has 2 CPU cores and can calculate 4 threads in parallel.
Intel Core 2 Extreme QX9770 Characteristic Intel Core i5-661
4 Cores 2
4 Threads 4
normal Core architecture normal
No Hyperthreading Yes
Yes Overclocking ? No
3.20 GHz Frequency 3.33 GHz
-- Turbo Frequency (1 Core) 3.60 GHz
-- Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.
Intel Core 2 Extreme QX9770 Characteristic Intel Core i5-661
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.
no iGPU GPU Intel HD Graphics (Westmere)
GPU frequency 0.50 GHz
-- GPU (Turbo) 0.90 GHz
-- GPU Generation 5
Technology 32 nm
Max. displays 2
-- Compute units 12
-- Shader 24
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 10.1

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
no iGPU GPU Intel HD Graphics (Westmere)
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC Decode
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

Up to 16 GB of memory in a maximum of 2 memory channels is supported by the Intel Core 2 Extreme QX9770, while the Intel Core i5-661 supports a maximum of 16 GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled.
Intel Core 2 Extreme QX9770 Characteristic Intel Core i5-661
DDR3-1066, DDR2-800 Memory DDR3-1066, DDR3-1333
16 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
17.1 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
12.00 MB L2 Cache 0.50 MB
-- L3 Cache 4.00 MB
-- PCIe version 2.0
-- PCIe lanes 16
-- PCIe Bandwidth 8.0 GB/s

Thermal Management

The Intel Core 2 Extreme QX9770 has a TDP of 136 W. The TDP of the Intel Core i5-661 is 73 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.
Intel Core 2 Extreme QX9770 Characteristic Intel Core i5-661
136 W TDP (PL1 / PBP) 73 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core 2 Extreme QX9770 has 12.00 MB cache and is manufactured in 45 nm. The cache of Intel Core i5-661 is at 4.50 MB. The processor is manufactured in 32 nm.
Intel Core 2 Extreme QX9770 Characteristic Intel Core i5-661
45 nm Technology 32 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, SSE2, SSE3, SSE4.1 ISA extensions SSE4.1, SSE4.2
LGA 775 Socket LGA 1156
VT-x, VT-d Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q1/2008 Release date Q1/2010
-- Release price 177 $
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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Core 2 Extreme QX9770 (76%)
Intel Core i5-661 (100%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Core 2 Extreme QX9770 (100%)
Intel Core i5-661 (87%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core 2 Extreme QX9770 Intel Core 2 Extreme QX9770
4C 4T @ 3.20 GHz
451 (76%)
Intel Core i5-661 Intel Core i5-661
2C 4T @ 3.60 GHz
597 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core 2 Extreme QX9770 Intel Core 2 Extreme QX9770
4C 4T @ 3.20 GHz
1583 (100%)
Intel Core i5-661 Intel Core i5-661
2C 4T @ 3.33 GHz
1308 (83%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core 2 Extreme QX9770 Intel Core 2 Extreme QX9770
4C 4T @ 3.20 GHz
2628 (100%)
Intel Core i5-661 Intel Core i5-661
2C 4T @ 3.33 GHz
2359 (90%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core 2 Extreme QX9770 Intel Core 2 Extreme QX9770
@ 0.00 GHz
0 (0%)
Intel Core i5-661 Intel Core i5-661
Intel HD Graphics (Westmere) @ 0.90 GHz
43 (100%)

Devices using this processor
Intel Core 2 Extreme QX9770 Intel Core i5-661
Unknown Unknown

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