Is it worth upgrading from the Intel Core i9-12900K?

Full comparison vs Intel Core i9-12900K

More details & evidence

Exact model: Boxed desktop processor · FCLGA1700 · BX8071514900KS

Sources: 68 of 69 specifications cited.

Evidence · Some facts need verification

68/69 listed facts sourced. Checked 28 Sept 2026. This describes source coverage, not product quality or independent testing.

Manufacturer facts: 68
Calculated from sources: 0
Independent measurements: Not available
Owner evidence: Not available
Conflicting facts: None recorded

Region not confirmed

Market details

Specification region not confirmed. UK availability not verified.

The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.

Intel Core i9-14900KS — manufacturer specifications

We have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.

Before you choose

High power limits (150 W base, 253 W maximum turbo) and no cooler in the box, so budget for strong cooling. Intel advises the latest motherboard BIOS with microcode 0x12F or later and Intel Default Settings; this doesn't repair a processor that is already unstable.Intel Core i9-14900KS — manufacturer specifications Intel desktop boxed processor cooling contents Intel i9-14900K and i9-14900KS — boxed packaging transition Intel Core i9-12900K — independently checked contender specifications Intel XTU — exact supported models and version 7.14 platform requirements Intel Application Optimization — verified models and limited Advanced Mode support Intel Vmin Shift guidance — reviewed 21 July 2026
Intel Application Optimization (APO) needs Windows 11, a compatible BIOS and Intel DTT/IPF, and only speeds up selected applications.Intel Application Optimization — verified models and limited Advanced Mode support

Key specification sources

SocketFCLGA1700

Evidence & conditions

Manufacturer specification

The socket alone doesn't guarantee support; check the motherboard's CPU-support list and BIOS.

CPU cores24

Evidence & conditions

Manufacturer specification

Total of Performance-cores and Efficient-cores, which run at different speeds.

Intel Core i9-14900KS — manufacturer specifications

Thread count32

Evidence & conditions

Manufacturer specification

Intel Core i9-14900KS — manufacturer specifications

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AMD's official Ryzen 9 5900XT model-associated Ryzen 5000-series retail-box artwork; exact model association is established by the cited manufacturer page.

AMD Ryzen 9 5900XT

Compared with yours · Intel Core i9-12900K

Not a drop-in upgrade

Different socket: FCLGA1700 → AM4Needs a motherboard with socket AM4

Threads24 → 32
ArchitectureAlder Lake → Zen 3
Tuning supportUnlocked processor; Intel XTU 7.14 supported → Unlocked CPU overclocking; Ryzen Master support
Maximum single-core turbo5.2 GHz → 4.8 GHz
L3 cache30 MB → 64 MB
Default TDPNot verified → 105 W

5 more differences

Total L2 cache14 MB → 8 MB
Integrated graphics availableYes → No
Integrated graphics or noneIntel UHD Graphics 770 → None; a discrete graphics card is required
CPU PCI ExpressPCIe 5.0 and 4.0; up to 20 CPU lanes → PCIe 4.0
Memory supportUp to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels → DDR4; up to 3200 MT/s

Same: Cores 16

Full comparison vs AMD Ryzen 9 5950X

More details & evidence

Exact model: AM4 boxed processor 100-100001581WOF · cooler not included

Sources: 42 of 42 specifications cited.

Evidence · 100% source coverage

42/42 listed facts sourced. Checked 28 Sept 2026. This describes source coverage, not product quality or independent testing.

Manufacturer facts: 42
Calculated from sources: 0
Independent measurements: Not available
Owner evidence: Not available
Conflicting facts: None recorded

Region not confirmed

Market details

Specification region not confirmed. UK availability not verified.

The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.

We have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.

Before you choose

Its 3.3 GHz base clock is lower than the 12-core 5900X's 3.7 GHz; both boost up to 4.8 GHz.AMD Ryzen 9 5900XT — manufacturer specifications AMD Ryzen 9 5900X — cited same-category comparison
Memory speed depends on how many sticks you fit: DDR4-3200 with two, DDR4-2933 with four single-rank and DDR4-2667 with four dual-rank. It also needs an AM4 motherboard with a compatible BIOS, a separate cooler and a graphics card.AMD Ryzen 9 5900XT — manufacturer specifications

Key specification sources

SocketAM4

Evidence & conditions

Manufacturer specification

CPU cores16

Evidence & conditions

Manufacturer specification

Thread count32

Evidence & conditions

Manufacturer specification

Default TDP105 W

Evidence & conditions

Manufacturer specification

Default TDP, not measured system power.

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Your total including delivery and taxes, for this exact variant in new condition. This remains your assumption.

Your total price (GBP)

AMD's official Ryzen 9 5950X model-associated Ryzen 5000-series retail-box artwork; exact model association is established by the cited manufacturer page.

AMD Ryzen 9 5950X

Compared with yours · Intel Core i9-12900K

Not a drop-in upgrade

Different socket: FCLGA1700 → AM4Needs a motherboard with socket AM4

Threads24 → 32
ArchitectureAlder Lake → Zen 3
Tuning supportUnlocked processor; Intel XTU 7.14 supported → Unlocked CPU overclocking; Ryzen Master support
Maximum single-core turbo5.2 GHz → 4.9 GHz
L3 cache30 MB → 64 MB
Default TDPNot verified → 105 W

5 more differences

Total L2 cache14 MB → 8 MB
Integrated graphics availableYes → No
Integrated graphics or noneIntel UHD Graphics 770 → None; a discrete graphics card is required
CPU PCI ExpressPCIe 5.0 and 4.0; up to 20 CPU lanes → PCIe 4.0
Memory supportUp to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels → DDR4; up to 3200 MT/s

Same: Cores 16

Full comparison vs AMD Ryzen 9 5900X

More details & evidence

Exact model: AM4 boxed processor 100-100000059WOF · cooler not included

Sources: 23 of 27 specifications cited.

Evidence · Some facts need verification

23/27 listed facts sourced. Checked 28 Sept 2026. This describes source coverage, not product quality or independent testing.

Manufacturer facts: 23
Calculated from sources: 0
Independent measurements: Not available
Owner evidence: Not available
Conflicting facts: None recorded

Region not confirmed

Market details

Specification region not confirmed. UK availability not verified.

The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.

We have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.

Before you choose

AMD's 5950X page doesn't list maximum memory capacity or ECC support; check the motherboard's specifications if you need large memory kits or ECC.AMD Ryzen 9 5950X — manufacturer specifications
No cooler or integrated graphics, so budget for both a cooler and a graphics card. It needs an AM4 motherboard with a compatible BIOS and DDR4 memory (rated up to 3200 MT/s).AMD Ryzen 9 5950X — manufacturer specifications

Key specification sources

SocketAM4

Evidence & conditions

Manufacturer specification

CPU cores16

Evidence & conditions

Manufacturer specification

Thread count32

Evidence & conditions

Manufacturer specification

Default TDP105 W

Evidence & conditions

Manufacturer specification

Default TDP, not measured system power.

Enter a price you found

Your total including delivery and taxes, for this exact variant in new condition. This remains your assumption.

Your total price (GBP)

AMD's official boxed-product artwork associated with Ryzen 9 7950X on its exact manufacturer product page; the visible artwork identifies the family rather than a readable exact model number.

AMD Ryzen 9 7950X

Compared with yours · Intel Core i9-12900K

Not a drop-in upgrade

Different socket: FCLGA1700 → AM5Needs a motherboard with socket AM5

Threads24 → 32
ArchitectureAlder Lake → Zen 4
Tuning supportUnlocked processor; Intel XTU 7.14 supported → Unlocked CPU overclocking; EXPO, PBO and Curve Optimizer
Maximum single-core turbo5.2 GHz → 5.7 GHz
L3 cache30 MB → 64 MB
Default TDPNot verified → 170 W

4 more differences

Total L2 cache14 MB → 16 MB
Integrated graphics or noneIntel UHD Graphics 770 → AMD Radeon Graphics · 2 graphics cores · 2200 MHz
CPU PCI ExpressPCIe 5.0 and 4.0; up to 20 CPU lanes → PCIe 5.0 · 28 total / 24 usable lanes
Memory supportUp to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels → Dual-channel DDR5 UDIMM; up to 128 GB; DDR5-5200 with two DIMMs or DDR5-3600 with four

Same: Cores 16

Full comparison vs AMD Ryzen 9 9950X

More details & evidence

Exact model: AM5 boxed processor 100-100000514WOF · cooler not included

Sources: 40 of 40 specifications cited.

Evidence · 100% source coverage

40/40 listed facts sourced. Checked 28 Sept 2026. This describes source coverage, not product quality or independent testing.

Manufacturer facts: 40
Calculated from sources: 0
Independent measurements: Not available
Owner evidence: Not available
Conflicting facts: None recorded

Region not confirmed

Market details

Specification region not confirmed. UK availability not verified.

The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.

AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers

We have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.

Before you choose

No cooler in the box; with a 170 W default TDP, AMD recommends liquid cooling for best performance.AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers
Needs an AM5 motherboard whose BIOS supports this processor, plus DDR5 memory; check the board's CPU-support list before buying.AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers
Memory is rated at DDR5-5200 with two sticks but only DDR5-3600 with four.AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers

Key specification sources

SocketAM5

Evidence & conditions

Manufacturer specification

CPU cores16

Evidence & conditions

Manufacturer specification

AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers

Thread count32

Evidence & conditions

Manufacturer specification

AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers

Default TDP170 W

Evidence & conditions

Manufacturer specification

Default TDP, not measured system power.

AMD Ryzen 9 7950X — exact manufacturer specifications and part identifiers

Enter a price you found

Your total including delivery and taxes, for this exact variant in new condition. This remains your assumption.

Your total price (GBP)

AMD's official boxed-product artwork associated with Ryzen 9 7950X3D on its exact manufacturer product page; the visible artwork identifies the family rather than a readable exact model number.

AMD Ryzen 9 7950X3D

Compared with yours · Intel Core i9-12900K

Not a drop-in upgrade

Different socket: FCLGA1700 → AM5Needs a motherboard with socket AM5

Threads24 → 32
ArchitectureAlder Lake → Zen 4
Tuning supportUnlocked processor; Intel XTU 7.14 supported → EXPO, PBO and Curve Optimizer
Maximum single-core turbo5.2 GHz → 5.7 GHz
L3 cache30 MB → 128 MB
Default TDPNot verified → 120 W

4 more differences

Total L2 cache14 MB → 16 MB
Integrated graphics or noneIntel UHD Graphics 770 → AMD Radeon Graphics · 2 graphics cores · 2200 MHz
CPU PCI ExpressPCIe 5.0 and 4.0; up to 20 CPU lanes → PCIe 5.0 · 28 total / 24 usable lanes
Memory supportUp to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels → Dual-channel DDR5 UDIMM; up to 128 GB; DDR5-5200 with two DIMMs or DDR5-3600 with four

Same: Cores 16

Full comparison vs AMD Ryzen 9 9950X3D

More details & evidence

Exact model: AM5 boxed processor 100-100000908WOF · cooler not included

Sources: 41 of 41 specifications cited.

Evidence · 100% source coverage

41/41 listed facts sourced. Checked 28 Sept 2026. This describes source coverage, not product quality or independent testing.

Manufacturer facts: 41
Calculated from sources: 0
Independent measurements: Not available
Owner evidence: Not available
Conflicting facts: None recorded

Region not confirmed

Market details

Specification region not confirmed. UK availability not verified.

The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.

AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers

We have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.

Before you choose

No cooler in the box, and AMD recommends liquid cooling for best performance.AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers
Needs an AM5 motherboard whose BIOS supports this processor, plus DDR5 memory; memory is rated at DDR5-5200 with two sticks but only DDR5-3600 with four.AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers
AMD doesn't list unlocked CPU-multiplier overclocking for this model; tuning is through PBO, Curve Optimizer and EXPO. Its maximum operating temperature is 89°C.AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers

Key specification sources

SocketAM5

Evidence & conditions

Manufacturer specification

CPU cores16

Evidence & conditions

Manufacturer specification

AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers

Thread count32

Evidence & conditions

Manufacturer specification

AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers

Default TDP120 W

Evidence & conditions

Manufacturer specification

Default TDP, not measured system power.

AMD Ryzen 9 7950X3D — exact manufacturer specifications and part identifiers

Enter a price you found

Your total including delivery and taxes, for this exact variant in new condition. This remains your assumption.

Your total price (GBP)

AMD's official boxed-product artwork for Ryzen 9 9950X; the exact model is established by its manufacturer page, not a readable model number on the visible box face.

AMD Ryzen 9 9950X

Compared with yours · Intel Core i9-12900K

Not a drop-in upgrade

Different socket: FCLGA1700 → AM5Needs a motherboard with socket AM5

Threads24 → 32
ArchitectureAlder Lake → Zen 5
Tuning supportUnlocked processor; Intel XTU 7.14 supported → Unlocked CPU overclocking; EXPO, PBO and Curve Optimizer
Maximum single-core turbo5.2 GHz → 5.7 GHz
L3 cache30 MB → 64 MB
Default TDPNot verified → 170 W

5 more differences

Total L2 cache14 MB → 16 MB
Integrated graphics or noneIntel UHD Graphics 770 → AMD Radeon Graphics · 2 graphics cores · 2200 MHz
CPU PCI ExpressPCIe 5.0 and 4.0; up to 20 CPU lanes → PCIe 5.0 · 28 total / 24 usable lanes
Memory supportUp to DDR5-4800 or DDR4-3200; 128 GB maximum; 2 channels → Dual-channel DDR5 UDIMM; up to 256 GB; DDR5-5600 with two DIMMs or DDR5-3600 with four
Maximum memory128 GB → 256 GB

Same: Cores 16

Full comparison vs AMD Ryzen 9 7950X

More details & evidence

Exact model: AM5 boxed processor 100-100001277WOF · cooler not included

Sources: 36 of 36 specifications cited.

Evidence · 100% source coverage

36/36 listed facts sourced. Checked 28 Sept 2026. This describes source coverage, not product quality or independent testing.

Manufacturer facts: 36
Calculated from sources: 0
Independent measurements: Not available
Owner evidence: Not available
Conflicting facts: None recorded

Region not confirmed

Market details

Specification region not confirmed. UK availability not verified.

The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.

AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier

We have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.

Before you choose

No cooler in the box; with a 170 W default TDP, AMD recommends liquid cooling for best performance.AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier
Needs an AM5 motherboard whose BIOS supports this processor, plus DDR5 memory; check the board's CPU-support list before buying.AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier
Memory is rated at DDR5-5600 with two sticks but only DDR5-3600 with four.AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier

Key specification sources

SocketAM5

Evidence & conditions

Manufacturer specification

CPU cores16

Evidence & conditions

Manufacturer specification

AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier

Thread count32

Evidence & conditions

Manufacturer specification

AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier

Default TDP170 W

Evidence & conditions

Manufacturer specification

Default TDP, not measured system power.

AMD Ryzen 9 9950X — manufacturer specifications and boxed identifier

Enter a price you found

Your total including delivery and taxes, for this exact variant in new condition. This remains your assumption.

Your total price (GBP)