only cpusin all categories
only cpus
United Kingdom

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

Photos - CPU Intel Core i7 Kaby Lake-X i7-7740X BOX
Outdated Product
£225.00 
Socket: Intel LGA 2066; Cores (cores): 4; Threads (threads): 8; Speed (GHz): 4.3; IGP: is absent;
Find prices on Amazon.uk
Find prices on eBay.uk
add to listmy lists
Intel Core i7 Kaby Lake-X [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)
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
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.
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.

We recommend
AMD Ryzen 5 Renoir-X
from £59.00 
AMD AM4, 65 W, cores 6  , threads 12 threads, process technology 7 nm, 3.6 GHz, TurboBoost 4.1 GHz, DDR4 3200 MHz, is absent
Intel Core i7 Rocket Lake
from £179.64 
Intel LGA 1200, 35 - 125 W, cores 8  , threads 16 threads, process technology 14 nm, 1.4 - 3.6 GHz, TurboBoost 4.6 - 5 GHz, maximum 128 GB, DDR4 3200 MHz, is absent / UHD Graphics 750
AMD Ryzen 7 Cezanne
from £126.94 
AMD AM4, 65 W, cores 8  , threads 16 threads, process technology 7 nm, 3.7 / 3.8 GHz, TurboBoost 4.6 GHz, DDR4 3200 MHz, is absent / Radeon Vega 8
AMD Ryzen 5 Renoir
from £83.97 
AMD AM4, 65 W, cores 6  , threads 12 threads, process technology 7 nm, 3.7 GHz, TurboBoost 4.2 GHz, maximum 64 GB, DDR4 3200 MHz, Radeon Vega 7
AMD Ryzen 5 Cezanne
from £71.70 
AMD AM4, 65 W, cores 6  , threads 12 threads, process technology 7 nm, 3.6 / 3.9 GHz, TurboBoost 4.2 - 4.6 GHz, maximum - / 128 GB, DDR4 3200 MHz, is absent - Radeon
Intel Core i5 Raptor Lake
from £135.99 
Intel LGA 1700, 65 / 125 W, cores 10 / 14  , 6P+4E, 6P+8E, threads 16 / 20 threads, process technology 10 nm, maximum 128 GB, DDR4 3200 MHz, DDR5 4800 / 5600 MHz, is absent - UHD Graphics 770
AMD Ryzen 7 Raphael
from £214.40 
AMD AM5, 65 - 120 W, cores 8  , threads 16 threads, process technology 5 nm, TurboBoost 5 - 5.4 GHz, maximum 128 GB, DDR5 5200 MHz, Radeon
Intel Core i9 Raptor Lake
from £319.99 
Intel LGA 1700, 35 - 150 W, cores 24  , 8P+16E, threads 32 threads, process technology 10 nm, maximum 128 GB, DDR4 3200 MHz, DDR5 5600 MHz, is absent / UHD Graphics 770
Intel Core i7 Raptor Lake
from £263.02 
Intel LGA 1700, 65 / 125 W, cores 16  , 8P+8E, threads 24 threads, process technology 10 nm, maximum 128 GB, DDR4 3200 MHz, DDR5 5600 MHz, is absent / UHD Graphics 770
Intel Core i9 Rocket Lake
from £187.90 
Intel LGA 1200, 65 / 125 W, cores 8  , threads 16 threads, process technology 14 nm, 2.5 / 3.5 GHz, TurboBoost 5.1 / 5.2 GHz, maximum 128 GB, DDR4 3200 MHz, is absent / UHD Graphics 750
Intel Core i5 Raptor Lake Refresh
from £146.97 
Intel LGA 1700, 35 - 125 W, cores 10 / 14  , 6P+4E, 6P+8E, threads 16 / 20 threads, process technology 10 nm, maximum 192 GB, DDR4 3200 MHz, DDR5 4800 / 5600 MHz, is absent - UHD Graphics 770
Intel Core i3 Alder Lake
from £62.99 
Intel LGA 1700, 60 W, cores 4  , threads 8 threads, process technology 10 nm, maximum 128 GB, DDR4 3200 MHz, DDR5 4800 MHz, is absent / UHD Graphics 730
Filters
Models
on sale all
Brands
Intel (base frequency) 
≤ 2 GHz 
2.1 GHz – 2.5 GHz 
2.6 GHz – 3 GHz 
3.1 GHz – 3.5 GHz 
3.6 GHz – 4 GHz 
> 4 GHz 
Other 
Questions and suggestions for model selection →
Intel Core i7 Kaby Lake-X often compared
Intel Core i7 Kaby Lake
Intel Core i7 Kaby Lake-X
[i7-7740X BOX]
vs
Intel Core i7 Kaby Lake
[i7-7700K BOX]
AMD Ryzen 7 Pinnacle Ridge
Intel Core i7 Kaby Lake-X
[i7-7740X BOX]
vs
AMD Ryzen 7 Pinnacle Ridge
[2700X BOX]
Intel Core i5 Coffee Lake
Intel Core i7 Kaby Lake-X
[i7-7740X BOX]
vs
Intel Core i5 Coffee Lake
[i5-8600K OEM]