Intel Core i7-8705G vs Intel Core i7-3940XM

Compare Intel 8th Generation Core i7 4 core CPU vs Intel Core X-series 4 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Benchmark Score

Overall Score

A combined score of all workloads

2382 points
2439 points
2% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

3668 points
3946 points
7% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

1988 points
1992 points
0.20% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

1908 points
1913 points
0.26% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i7-8705G and the Core i7-3940XM? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

61.13 points
25% slightly higher Blender score
48.88 points
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

3878 points
29% slightly higher Geekbench 5 (multi) score
2994 points
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

1153 points
45% significantly higher Geekbench 5 (single) score
793 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

3988 points
95% significantly higher Geekbench 6 (multi) score
2039 points
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1284 points
99% significantly higher Geekbench 6 (single) score
644 points

Specifications

Cores

Number of physical processing units

4
Identical
4

Threads

Number of logical processing units

8
Identical
8

Clock Speed

Base frequency at which the chip operates

3.1 GHz
3.20 GHz
3% slightly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

4.1 GHz
5% slightly higher turbo speed
3.9 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

65 W
55 W
18% slightly lower TDP

PCIe Lanes

Number of physical connections between the CPU and expansion slots

8
16
100% significantly 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
100% significantly more supported memory
32 GiB

L2 Cache

Secondary embedded memory, slower than L1 cache

1 MiB
300% significantly more L2 cache
0.25 MiB

L3 Cache

General memory pool for all cores

8 MiB
Identical
8 MiB

Other details

Rank

Ranking in the hardwareDB database

646th of 1,089
638th of 1,089

Family

The product line

8th Generation Core i7
Core X-series

Release date

The official date of release of this chip

2018 February
2012 August

Memory Type

The type of memory used by this chip

DDR4-2400
DDR3-1333

Is Unlocked

Can this CPU can be overclocked

No
-

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i7-8705G vs Core i7-3940XM comparison

Our benchmark analysis concludes that the Core i7-8705G performs better than the Core i7-3940XM. Despite this, the Core i7-3940XM has the advantage in our gaming benchmark.

Our spec comparison shows that they have an identical amount of cores and the same number of threads. With our hardware info, we find that the Core i7-3940XM has a slightly higher clock speed than the Core i7-8705G. Despite this, the Core i7-8705G has a slightly higher turbo speed. The Core i7-3940XM outputs less heat than Core i7-8705G thanks to a slightly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Core i7-8705G has significantly more L2 cache when compared to the Core i7-3940XM. However, both these chips have the same amount of L3 cache.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. Indeed, the Core i7-8705G has more threads than cores. Each physical core is split into multiple threads.

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