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AMD Ryzen 9 9900X vs Intel Core i7-7700K

These are not close competitors. The Ryzen 9 9900X is a current 12-core AM5 desktop chip; the i7-7700K is a 2017 quad-core on a dead LGA1151 platform, sold renewed. Buy the 9900X for any new build or serious workload. The 7700K only makes sense as a cheap drop-in for an existing LGA1151 board. The 9900X's lowest recent price was $350.82 on November 3, 2026, against a high of $384.99 on November 1; no store price was given for the 7700K.

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AMD
AMD Ryzen 9 9900X 12-Core Processor

AMD Ryzen 9 9900X

AMD Ryzen 9 9900X 12-Core Processor

4.9(459 ratings)
See all prices and details

Choose the Ryzen 9 9900X if you are building or upgrading an AM5 system and need 12 cores, DDR5, PCIe 5.0 and a platform with years of support ahead.

Pros
  • 12 cores and 24 threads handle rendering, compiling and streaming far better than four cores.
  • Zen 5 IPC and a 5.6 GHz boost give strong single-thread speed too.
  • AM5 with DDR5 and ECC support leaves room to upgrade for years.
  • Integrated Radeon graphics means you can boot without a discrete GPU.
Cons
  • $350.82 is a large outlay next to a used 7700K.
  • 120 W TDP needs a real cooler and a decent AM5 board, which adds cost.
  • Requires new DDR5 memory; old DDR4 will not carry over.
Intel
Intel i7-7700K (Renewed)

Intel Core i7-7700K

Intel i7-7700K (Renewed)

See all prices and details

Choose the i7-7700K if you already own a working LGA1151 board and DDR4 and want a cheap quad-core that still overclocks.

Pros
  • Cheap way to revive an existing LGA1151 system.
  • Unlocked multiplier for easy overclocking.
  • 91 W TDP is easier to cool.
  • Integrated graphics with 4K output and up to three monitors.
Cons
  • Four cores and eight threads are a bottleneck in modern games and multitasking.
  • DDR4-2400 and 64 GB cap on a dead platform with no upgrade path.
  • Renewed condition means used parts and limited warranty.
  • No ECC support and older instruction set support.

What separates them

AMD Ryzen 9 9900XIntel Core i7-7700K
Cores / threads12 cores, 24 threads4 cores, 8 threads
Architecture and releaseZen 5, current generationKaby Lake, January 2017
Socket and platformAM5, new boards, long upgrade pathLGA1151, discontinued platform
MemoryDDR5-5600, dual channel, up to 192 GB, ECC supportDDR4-2400, up to 64 GB, no ECC
Clocks4.4 GHz base, 5.6 GHz boost4.2 GHz base, 4.5 GHz boost
Power120 W TDP91 W TDP
Condition and warrantyNew retail partRenewed, used-condition
Price$350.82 lowest on November 3, 2026; $384.99 high on November 1No price given

Price history

$384.99$199.00
Nov 1Nov 3
  • AMD Ryzen 9 9900X: lowest $350.82 on Nov 3 at Grooves-Inc.com.
  • Intel Core i7-7700K: lowest $199.00 on Nov 2 at Amazon.

Prices at every store

AMD Ryzen 9 9900X

  • Best BuyCheck price at Best Buy
  • B&H Photo-Video-AudioCheck price at B&H Photo-Video-Audio
  • Central ComputersCheck price at Central Computers
Prices and history →

Intel Core i7-7700K

  • AmazonCheck price at Amazon
  • eBayCheck price at eBay
  • Newegg.comCheck price at Newegg.com
Prices and history →

Specs compared

SpecAMD Ryzen 9 9900XIntel Core i7-7700K
Socket TypeAM5Socket LGA1151
RAM TypeDDR5DDR4
ManufacturerAMDIntel
Discrete GraphicsNoNo
Integrated GraphicsYesYes
GPU TypeIntegratedIntegrated
Clock Speed4.4 GHz4.2 GHz
Number Of Cores12Quad-core
Boost Clock Speed5.6 GHz4.5 GHz
Number Of Threads248
Thermal Design Power (TDP)120 W91 W
Supports OverclockingYesYes
Show all 34 specsShow fewer specs
SpecAMD Ryzen 9 9900XIntel Core i7-7700K
FSB Speed2200 MHz66 MHz FSB
Memory TypeDDR5DDR4
Max Memory Capacity192 GB64 GB
Memory SpeedDDR5-56002400 MHz (DDR4)
ECC SupportYesNo
Memory Channel SupportDual Channel—
CPU ModelRyzen 9 9900X—
CPU SeriesRyzen 9—
CPU GenerationZen 5—
CPU For Use With

What reviewers say

AMD Ryzen 9 9900X

  • 4.9 / 5459 ratings

Owners rate it highly, calling it a fast, efficient all-rounder for gaming and creative work. Complaints center on heat under sustained all-core loads and the need for a BIOS update on older boards.

What people mention
  • PerformancePraisedOwners say it handles gaming, streaming and rendering at once without slowing down.
  • HeatCriticisedSustained all-core loads push temperatures high, so a strong cooler is needed.
  • Power drawPraisedReviewers note it draws less power than the previous 12-core generation.
  • SetupMixedIt works on AM5 boards, but older ones need a BIOS update before it boots.

Intel Core i7-7700K

Owners rate the i7-7700K highly as a gaming chip of its generation, praising its high clocks and overclocking headroom. Complaints center on heat and power draw, and on how quickly 4 cores became a limit for newer games and heavy multitasking.

What people mention
  • PerformancePraisedOwners say it handles games and daily tasks smoothly at high clock speeds.
  • OverclockingPraisedBuyers report easy gains from the unlocked multiplier on capable boards.
  • HeatCriticisedReviewers note high temperatures and power draw, worse once overclocked.
  • Core countMixedFine for older games, but 4 cores and 8 threads are seen as a limit for newer titles and multitasking.

Questions and answers

Which is better for gaming?
The 9900X, clearly. Modern games use more than four threads, and its 5.6 GHz boost and Zen 5 cores beat the 7700K's 4.5 GHz on every metric. The 7700K can still run older titles but stutters in new ones.
Can I put the 9900X in an LGA1151 board?
No. The 9900X uses AM5 and the 7700K uses LGA1151; they are physically and electrically incompatible. You need a new AM5 motherboard and DDR5 memory for the 9900X.
Is the 7700K worth it as a budget option?
Only if you already own an LGA1151 board and DDR4. For a new build, a modern entry-level CPU costs less than the total platform cost of reviving 2017 hardware.
Which lasts longer?
The 9900X by a wide margin. It is current-generation with an active upgrade path; the 7700K is a renewed 2017 part on a discontinued socket.
Does the 9900X need a graphics card?
No. It has integrated Radeon graphics, so it will boot and drive a display without a discrete GPU. Add one for gaming or GPU compute.
Is $350.82 a good price for the 9900X?
It is the lowest price seen since November 1, 2026, below the $384.99 high. Check the price history before buying to see if it has dropped further.

More comparisons

  • AMD Ryzen 9 9900X 12-Core Processor vs Intel Core i7-6700K
  • AMD Ryzen 9 9900X3D 12-Core Processor vs Intel i7-7700K (Renewed)
  • AMD Ryzen 7 9800X3D 8-Core Processor vs Intel i7-7700K (Renewed)
Desktop
—
CPU Release DateNow launched—
Integrated Graphics ModelRadeon Graphics—
Cache Memory—8 MB cache memory
TDP—91 watts
Release Date—January 2017
RAM Maximum Capacity—64 GB
RAM Speed—2400 MHz (DDR4)
RAM ECC Support—No
Output Resolution—4K
Max Monitors Supported—3
Display Output Type—HDMI
Memory Slots—2 (empty DDR4 SODIMM slots)