Core i9 12900KS vs Ryzen 7 5800X3D



Final Up to date:

In terms of the 12900KS vs the 5800X3D, which is best? The battle of AMD Vs Intel has been an extended one, with Intel dominating the CPU market when it comes to efficiency for a few years. That’s till AMD introduced its Ryzen CPUs, which have been enhancing exponentially with each new model and shutting the hole on Intel with every era. We hope you discover what you want on this Core i9 12900KS vs Ryzen 7 5800X3D article.

The newest battle is AMD’s final AM4 CPU going through off in opposition to Intel’s twelfth era flagship, which possesses expertise leaps forward of the 5800X3D. It’s a real David vs Goliath state of affairs, however the 5800X3D has a trick up its sleeve. May AMD’s 3D V-cache be the rock that brings down Goliath? 

Core i9 12900KS vs Ryzen 7 5800X3D: Cache and 3D V-cache

Earlier than we delve into the variations between 2D and 3D cache, it’s necessary to grasp what CPU cache is. 

What’s cache? 

A CPU’s cache is basically an extension of system reminiscence or RAM, because the cache acts as backup storage for reminiscence transference. In at this time’s CPU structure, the CPU cache is ordered into three ranges. The three ranges are organized and named as follows: 

CPU cache ranges are additionally organized in alphanumerical order, with L3 cache being the most important however slowest and L1 being the smallest however quickest. Essentially the most frequent Directions are saved in cache from RAM for sooner execution speeds. 

2D VS 3D cache 

The 2D cache is at this time’s customary CPU cache. 2D cache is stacked laterally (in a line) with smaller silicon dies being produced with every era permitting house for extra chiplets. The problem with laterally stacked CPU cache is the spatial requirement – it’s not very environment friendly and till current occasions we didn’t have the expertise to rectify the difficulty. 

AMD has lately included 3D V-cache into its upcoming releases, the Ryzen 7 5800X3D. The 3D cache is stacked vertically versus laterally, all due to current technological developments in 3D printing. 

Stacking the cache shiplets vertically drastically will increase the quantity you’ll be able to match into one footprint, with out compromising velocity or effectivity. This vertical cache stacking has allowed AMD to pack 96MB of complete L3 cache with entry speeds of as much as 2TB/s into the 5800X3D. 

This idea isn’t a brand new one, nonetheless, and we’ve seen 3D stacking in storage sorts with Samsung’s V-nand expertise debuting in 2013. 

12900KS vs 5800X3D specs 

When evaluating two elements of any type it’s necessary to check out each their on-paper specs. This can assist us decide what variations the elements have and the way this may occasionally have an effect on efficiency. 


The i9-12900KS has been dubbed by Intel as ‘the quickest CPU on the planet’ in its promotional materials, however will this maintain true? The 12900KS is probably the final twelfth era CPU that Intel will launch, and with a $799 price ticket does it pull its weight? 

The specs of the 12900KS are as follows: 

  • P-cores 8
  • E-cores 8
  • Threads 24
  • P-core clock velocity 3.4 / 5.5 (GHz)
  • E-core clock velocity 2.5 / 4.0 (GHz)
  • L2 cache 14MB
  • L3 cache 30MB
  • Base CPU energy 150W
  • Socket LGA1700
  • iGPU UHD770

Ryzen 7 5800X3D 

The Ryzen 7 5800X is probably the final ever AM4 launch, marking the top of an period and a legendary socket. Will the 5800X3D be a worthy champion of AM4? Representing all of the technological capabilities of the socket, and cementing it within the books as one of the crucial vital sockets in CPU historical past. 

The specs of the Ryzen 7 5800X3D are as follows: 

  • 8 cores
  • 16 threads
  • Increase clock 4.5GHz
  • Base clock 3.4GHz
  • L1 cache 512KB
  • L2 cache 4MB
  • L3 cache 96MB
  • Default TDP 105W
  • Socket AM4

12900KS vs 5800X3D: Specification comparability 

Right here we’ll evaluate the on-paper specs of the 2 CPUs and pit them head-to-head. This could provide help to make an knowledgeable choice when evaluating any two items of {hardware}. 

Core rely

The 12900KS has a better core rely in comparison with the 5800X3D. 

12900ks win

Having a better core rely suggests your CPU might be higher at multitasking natively, with extra cores at your disposal to deal with extra duties concurrently. This all depends upon whether or not the software program you might be utilizing helps multicore utilization – most trendy software program does. 

The next variety of cores develop into extra integral when performing workstation duties as these closely rely on the power to multitask. So in case you’re multitasking a stable excessive core rely is the best way to go. 

Thread rely

The 12900KS has a better variety of threads. 

Core i9 12900KS vs Ryzen 7 5800X3D 12900ks win

Thread rely is an analogous story to core rely, the extra threads you will have the higher your CPU might be at multitasking. Threads are a bit of completely different to cores, nonetheless, as threads aren’t really bodily. 

Multithreading is a expertise utilized in each AMD and Intel CPUs. This expertise permits the CPU cores to course of one different instruction concurrently, and this different instruction is what we name a thread. Implementing this expertise exponentially will increase the potential output of the CPU however not fairly by double as you may assume. Threads are virtualised and never bodily like cores, and so they must share the CPU core’s sources making them barely slower because of this. 

You’ll be able to learn extra about multithreading in our “what’s SMT article” in case you’d like a bit of extra clarification. 

Core velocity

The 12900KS has a vastly sooner core velocity in comparison with the 5800X3D.

12900ks win

Core velocity is necessary, and it determines what number of cycles your CPU can carry out per second, measured in GHz. A ‘cycle’ refers back to the CPU instruction cycle that consists of three actions: fetch, decode and execute. These three actions are what essentially comprise CPU operation as we all know it.

Having a CPU with a sooner core velocity means extra of those cycles will be accomplished per second, in flip which means extra directions executed per second. Core velocity (particularly with the identical nm course of) is an effective primary indicator of how nicely a CPU could carry out. 

There’s one other measurement to be taken under consideration, and that measurement is all core velocity. This is similar essentially as core velocity, solely this time it’s the velocity wherein the CPU can maintain on all cores concurrently. This measurement is normally a bit of decrease than the single-core increase speeds. 


The 5800X3D has far more cache than the 12900KS. 

Core i9 12900KS vs Ryzen 7 5800X3D 5800x3d win

Cache as we defined earlier is an extension of the system’s RAM, and the bigger the capability of the cache, the extra directions will be saved inside it. This brings entry velocity benefits to doubtlessly extra applications concurrently and permits for bigger units of cued directions, which means the cache needs to be flushed a fewer quantity of occasions. 

Extra cache is best, and the 5800X3D has the velocity and capability benefit due to AMD’s 3D V-cahce. It stays to be seen nonetheless simply what sort of benefits it will give the 5800X3D over the 12900KS. 


The 5800X3D has a decrease TDP than the 12900KS. 

5800x3d win

TDP stands for thermal design energy, and it’s the most quantity of thermal power a part can produce below manufacture outlined working circumstances. 

The next TDP was once indicative of a much less environment friendly CPU. Nonetheless, at this time TDP is normally indicative of a better efficiency CPU and with the 12900KS beginning at 150W we will see there’s far more thermal power below this IHS. 

TDP is necessary and must be taken under consideration as a result of it’s necessary to have a cooling resolution that’s able to negating the TDP generated by the CPU. All the time test together with your cooler producer what TDP your cooler is rated for, particularly in case you plan on overclocking both of at this time’s CPUs. The act of overclocking exponentially will increase the TDP of a part because of the elevated voltages and demand, it’s necessary to offset that with good cooling. 

You’ll be able to take a look at our ‘greatest LGA 1700 CPU cooler’ article in case you’re available in the market for a brand new one. 


The 12900KS belongs to the LGA 1700 socket, whereas the 5800X3D belongs to AM4. 

The socket will be considered a form that solely a CPU with the corresponding form will match. Sockets deliver new technological developments to the desk within the type of motherboards with extra superior chipsets. 

LGA1700 is a era forward of AM4 and can help extra options like PCIe gen 5 and DDR5, these are options AM4 is not going to help. Solely when AMD strikes to AM5 will these options be supported. 

12900KS vs 5800X3D: variations

12900ks vs 5800x3dnt

There’s clearly some stark distinction between the 12900KS and the 5800X3D, these variations embody: 

  • Break up cores
  • DDR5 help 
  • PCIe gen 5 help 

Break up cores 

Splitting cores utilizing ARM’s LITTLE.huge expertise was Intel’s twelfth era’s largest speaking level when it was unveiled, and the best way LITTLE.huge expertise works is extremely fascinating. 

How the cut up P-cores (efficiency) and E-cores (effectivity) work precisely is the efficiency cores are each hyperthreaded and clocked insanely quick. These are the cores that do all of the heavy lifting therefore the title ‘efficiency cores’. 

Then there are the E-cores, which aren’t hyperthreaded and are clocked at decrease speeds to be each energy environment friendly and efficiency environment friendly. That is achieved as a result of E-cores aren’t compelled to share sources as they aren’t hyperthreaded. 

Within the case of Home windows, the working system delegates duties to both E-cores or P-cores based mostly on a pre-scan of an instruction set by a job scheduler. It saves energy by not operating P-cores on duties that aren’t that heavy and don’t require plenty of energy.   

DDR5 help 

DDR5 has sped up RAM to nearly unthinkable speeds on the intel twelfth gen platform, as that is the one platform that at present helps desktop DDR5 RAM. 

Sooner RAM permits directions to be delivered sooner and, with extra bandwidth, extra will be given at any given time. This supplies an enormous benefit in processing speeds over slower DDR4 reminiscence. 

PCIe Gen 5 help 

PCIe Gen 5 help permits units akin to storage units and show units to benefit from the sooner Gen 5 PCIe interface. This improves file switch, basic operation and archiving speeds considerably, in addition to pushing extra FPS out of your video card too, due to snappier interfaces and better bandwidth. 

12900KS vs 5800X3D: Value 

The 5800X3D is considerably cheaper than the 12900KS at $449.

Value is a large issue, particularly when restricted to a price range. As we speak’s CPUs couldn’t be additional aside in worth, because of the 12900KS being nearly double the 5800X3D. 

The 5800X3D is available in at round $449 whereas the 12900KS might be priced at round $799! 

Nonetheless, that’s a value per core for the 5800X3D of $56 and a value per core of round $49 for the 12900KS, making the 12900KS the extra cost-efficient selection if we’re taking in uncooked core per greenback. 

Core i9 12900KS vs Ryzen 7 5800X3D: Last phrase 

Core i9 12900KS vs Ryzen 7 5800X3D 12900ks win

Core i9 12900KS vs Ryzen 7 5800X3D who wins? The 12900KS is the winner right here for us. The superior options akin to PCIe gen 5, DDR5 and the extra superior core expertise actually bought it for us. The 5800X3D will most likely carry out worse than the 12900KS (we’ll know for positive once we get it in for testing) however we’ve been on this trade lengthy sufficient to know that it definitely isn’t going to carry out twice as dangerous. 

This makes the 5800X3D nonetheless an extremely viable selection, due to its cheaper motherboards and RAM. however when it comes to uncooked energy, future-proofing and potential, the 12900KS takes the cake. 

The 12900ks will chew by way of high-intensity workloads effectively due to its LITTEL.huge core expertise. And with a P-core clock velocity topping 5.5GHz, it’ll make sure you annihilate any recreation you throw at it, complementing a high-end GPU completely. We hope this 12900KS vs 5800X3D article solutions any questions you could have.