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Intel Core i7 Kaby Lake-X i7-7740X BOX (BX80677I77740X)

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Outdated Product
£225.00 
Socket: Intel LGA 2066; Cores (cores): 4; Threads (threads): 8; Speed (GHz): 4.3; IGP: is absent;
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Intel Core i7 Kaby Lake-X [i7-7740X BOX]
£225.00 
Intel Core i7 Kaby Lake-X i7-7740X BOX
multithreadingunlocked multiplierTurbo mode
i7-7740X BOX
i7-7740X OEM
Main
SeriesCore i7
Code nameKaby Lake-X
SocketIntel LGA 2066
Lithography14 nm
In boxBOX (no cooler)
Cores and Threads
Cores4 cores
Threads8 threads
Multithreading
Speed
Clock speed4.3 GHz
TurboBoost / TurboCore4.5 GHz
Cache
L1 cache256 KB
L2 cache1024 KB
L3 cache8 MB
Specs
IGPis absent
Front side bus8 GT/s
TDP112 W
InstructionMMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE4.1, SSE4.2, AES, AVX, AVX2 / BMI, BMI1, BMI2, F16C, FMA3, EM64T, NX, XD, VT-x, VT-d, HT, TBT 2.0 /
Multiplier43
Free multiplier
Passmark CPU Mark9940 score(s)
Geekbench 428205 score(s)
Cinebench R15988 score(s)
Memory
Max. RAM64 GB
Max. DDR4 speed2666 MHz
Channels2
Added to E-Catalogmay 2017
P/N
BX80677I77740X

Eight streams. Auto acceleration. Possibility of manual overclocking.
Packing type: BOX (without cooler)
Information in model description is for reference purposes.
Before buying always check characteristics and configuration of product with online store manager
Catalog Intel 2024 - new products, best sales and most actual models Intel.
Why is the new processor faster at the same frequency?The main factors that make new processes faster without increasing clock speeds
How to choose a CPU?How to choose the right CPU for any task, from spreadsheets to modern games and work applications
AccessoriesAll accessories for Intel i7-7740X BOX →

Cheap among the expensive

The low end Intel Basin Falls processor is the Core i5-7640X, but it only has four physical cores without Hyper-Threading, meaning it doesn't have twice the number of virtual threads. Buying such a weak processor to build a HEDT computer is clearly not worth it. We consider the quad-core but eight-thread Core i7-7740X to be the minimum justified choice.

twin brothers

It is built on the Kaby Lake-X architecture, similar to processors with the more common LGA1151 socket. As a result, the i7-7740X is almost a complete copy of the i7-7700K: the same TurboBoost 2.0 auto overclocking, the same unlocked multiplier for additional manual overclocking. The only significant difference is the lack of an integrated graphics accelerator. However, it is not needed, because motherboards with an LGA2066 socket still do not have video outputs.

Buying for growth

If the Core i7-7740X is no better, and even worse in small things, than the i7-7700K, then why pay twice for an LGA2066 motherboard? The meaning lies in the prospect of a future upgrade. If you already realize that eight streams will not be enough for you in a year or two, for example, for video editing or 3D modeling, but the low-cost is limited, take the basic kit from the LGA2066 motherboard and inexpensive (compared to other Basin Falls processors) Core i7-7740X processor to replace it in the future.

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Intel Core i7 Kaby Lake-X often compared
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[i7-7740X BOX]
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Intel Core i7 Kaby Lake-X
[i7-7740X BOX]
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[2700X BOX]
Intel Core i5 Coffee Lake
Intel Core i7 Kaby Lake-X
[i7-7740X BOX]
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