Intel Core i7-6700 vs Intel Core Ultra 7 155U

Compare Intel 6th Generation Core i7 4 core CPU vs Intel Core Ultra (Series 1) 12 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

3117 points
4819 points
54% significantly better overall score

Gaming Score

The raw gaming performance with a fast GPU

4991 points
7087 points
41% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

2559 points
4161 points
62% significantly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

2457 points
4014 points
63% significantly better heavy workload score

Free CPU Benchmark

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Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

69.31 points
94.95 points
37% slightly higher Blender score

Specifications

Cores

Number of physical processing units

4
12
200% significantly more cores

Threads

Number of logical processing units

8
14
75% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.4 GHz
61% significantly higher clock speed
2.1 GHz

Turbo Speed

Higher frequency used for heavy workloads

4 GHz
4.8 GHz
20% slightly higher turbo speed

PCIe Lanes

Number of physical connections between the CPU and expansion slots

16
20
25% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

64 GiB
96 GiB
49% significantly more supported memory

L2 Cache

Secondary embedded memory, slower than L1 cache

1 MiB
10 MiB
900% significantly more L2 cache

L3 Cache

General memory pool for all cores

8 MiB
12 MiB
49% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

523rd of 1,089
364th of 1,089

Family

The product line

6th Generation Core i7
Core Ultra (Series 1)

Release date

The official date of release of this chip

2015 August
2023 November

Memory Type

The type of memory used by this chip

DDR4-1866
DDR5-7467

Is Unlocked

Can this CPU can be overclocked

No
-

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i7-6700 vs Core Ultra 7 155U specs and performance

In our benchmarks, the Core Ultra 7 155U beats the Core i7-6700 in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-6700 in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core Ultra 7 155U has significantly more cores with 12 cores compared to the Core i7-6700 that has 4 cores. It also has more threads than the Core i7-6700. With our hardware info, we find that the Core i7-6700 has a significantly higher clock speed than the Core Ultra 7 155U. Despite this, the Core Ultra 7 155U has a slightly higher turbo speed. In terms of cache, the Core Ultra 7 155U has significantly more L2 cache when compared to the Core i7-6700. The Core Ultra 7 155U also has significantly more L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i7-6700 has more threads than cores. Each physical core is split into multiple threads.

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