Intel Core 2 Extreme QX6850 vs Intel Core i7-920

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CPU comparison with benchmarks


Intel Core 2 Extreme QX6850 CPU1 vs CPU2 Intel Core i7-920
Intel Core 2 Extreme QX6850 Intel Core i7-920

CPU comparison

Intel Core 2 Extreme QX6850 or Intel Core i7-920 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core 2 Extreme QX6850 has 4 cores with 4 threads and clocks with a maximum frequency of 3.00 GHz. Up to 16 GB of memory is supported in 2 memory channels. The Intel Core 2 Extreme QX6850 was released in Q3/2007.

The Intel Core i7-920 has 4 cores with 8 threads and clocks with a maximum frequency of 2.93 GHz. The CPU supports up to 24 GB of memory in 3 memory channels. The Intel Core i7-920 was released in Q4/2008.
Intel Core2 Extreme (7) Family Intel Core i7 (293)
Intel Core 2 Extreme QX6000 (3) CPU group Intel Core i7 900 (7)
1 Generation 1
Kentsfield (Core) Architecture Bloomfield
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core 2 Extreme QX6850 has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the Intel Core 2 Extreme QX6850 is 3.00 GHz while the Intel Core i7-920 has 4 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the Intel Core i7-920 is at 2.66 GHz (2.93 GHz).

Intel Core 2 Extreme QX6850 Characteristic Intel Core i7-920
4 Cores 4
4 Threads 8
normal Core architecture normal
No Hyperthreading Yes
Yes Overclocking ? No
3.00 GHz Frequency 2.66 GHz
-- Turbo Frequency (1 Core) 2.93 GHz
-- Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core 2 Extreme QX6850 Characteristic Intel Core i7-920
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core 2 Extreme QX6850 or Intel Core i7-920 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

no iGPU GPU no iGPU
GPU frequency --
-- GPU (Turbo) --
-- GPU Generation --
Technology
Max. displays
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version --

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 no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The Intel Core 2 Extreme QX6850 can use up to 16 GB of memory in 2 memory channels. The maximum memory bandwidth is 12.8 GB/s. The Intel Core i7-920 supports up to 24 GB of memory in 3 memory channels and achieves a memory bandwidth of up to 25.6 GB/s.

Intel Core 2 Extreme QX6850 Characteristic Intel Core i7-920
DDR3-1066, DDR2-800 Memory DDR3-1066
16 GB Max. Memory 24 GB
2 (Dual Channel) Memory channels 3
12.8 GB/s Max. Bandwidth 25.6 GB/s
No ECC No
8.00 MB L2 Cache 1.00 MB
-- L3 Cache 8.00 MB
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the Intel Core 2 Extreme QX6850 is 130 W, while the Intel Core i7-920 has a TDP of 130 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core 2 Extreme QX6850 Characteristic Intel Core i7-920
130 W TDP (PL1 / PBP) 130 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core 2 Extreme QX6850 is manufactured in 65 nm and has 8.00 MB cache. The Intel Core i7-920 is manufactured in 45 nm and has a 9.00 MB cache.

Intel Core 2 Extreme QX6850 Characteristic Intel Core i7-920
65 nm Technology 45 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, SSE2, SSE3 ISA extensions SSE4.1, SSE4.2
LGA 775 Socket LGA 1366
VT-x Virtualization VT-x, VT-x EPT
No AES-NI No
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2007 Release date Q4/2008
-- Release price 305 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks

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 QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
417 (81%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.93 GHz
513 (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 QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
1358 (65%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.66 GHz
2085 (100%)

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 QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
2271 (81%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.66 GHz
2800 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core 2 Extreme QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
0 (0%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.93 GHz
525 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core 2 Extreme QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
0 (0%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.66 GHz
1771 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core 2 Extreme QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
0 (0%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.66 GHz
242 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core 2 Extreme QX6850 Intel Core 2 Extreme QX6850
4C 4T @ 3.00 GHz
0 (0%)
Intel Core i7-920 Intel Core i7-920
4C 8T @ 2.66 GHz
1263 (100%)

Devices using this processor

Intel Core 2 Extreme QX6850 Intel Core i7-920
Unknown Unknown

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