Buying Guide
The Best 8-Core CPUs
From the Ryzen 7 5700X to the Ryzen 7 5800X3D: four processors ranked on L3 cache and boost clock, with who should skip each one.
By The PC Journal editorial team
11 min read4 products evaluated
Eight cores covers gaming, streaming and most creative apps without the heat of a 16-core chip. Every pick has eight cores, ordered by L3 cache, which is where these chips differ most.
We sorted these picks by L3 cache, max boost and cores / threads, working from the makers' own data; nothing here was tested in-house, and any figure a maker omits is noted as missing.
Quick Picks
Our 4 recommendations at a glance. Tap a pick for the full verdict.
Also Consider
AMD Ryzen 7 7800X3D
First-generation AM5 3D V-Cache.
Best for: Buyers who want first-generation AM5 3D V-Cache.
Our take Check price for AMD Ryzen 7 7800X3D (opens in a new tab)
Premium Pick
AMD Ryzen 7 5800X3D
3D V-Cache on the AM4 platform at the highest price in the group.
Best for: Buyers for whom price is not the deciding factor.
Our take Check price for AMD Ryzen 7 5800X3D (opens in a new tab)
Lowest Price Here
AMD Ryzen 7 5700X
The cheapest way into this group, below the Ryzen 7 7700.
Best for: Keeping the budget tight.
Our take Check price for AMD Ryzen 7 5700X (opens in a new tab)
Highest Boost Clock
AMD Ryzen 7 7700
The highest boost clock here (5.3GHz).
Best for: Buyers who put boost clock first.
Our take Check price for AMD Ryzen 7 7700 (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| First-generation AM5 3D V-Cache. | Buyers who want first-generation AM5 3D V-Cache. | Check price for AMD Ryzen 7 7800X3D (opens in a new tab) |
| 3D V-Cache on the AM4 platform at the highest price in the group. | Buyers for whom price is not the deciding factor. | Check price for AMD Ryzen 7 5800X3D (opens in a new tab) |
| The cheapest way into this group, below the Ryzen 7 7700. | Keeping the budget tight. | Check price for AMD Ryzen 7 5700X (opens in a new tab) |
| The highest boost clock here (5.3GHz). | Buyers who put boost clock first. | Check price for AMD Ryzen 7 7700 (opens in a new tab) |
Our Picks
Also Consider1 of 4
AMD Ryzen 7 7800X3D on Amazon (opens in a new tab)
The Ryzen 7 7800X3D has the same 96MB of L3 cache as its successor with an older core design and lower clocks.
Best for
- Buyers who want first-generation AM5 3D V-Cache.
Skip if
- Worth skipping when no cooler in the bo is a problem.
Why we like it
On the same AM5 socket, it is the way into X3D gaming for less. Its 5GHz boost clock ranks second of 4 here, behind the Ryzen 7 7700 (5.3GHz) and ahead of the Ryzen 7 5800X3D (4.5GHz). On rated power it trails the group at 120W, while the Ryzen 7 5700X offers 65W.
It also offers first-generation AM5 3D V-Cache and the Zen 4 architecture. It needs an AM5 board (A620, B650, B850, X670 or X870 series) and DDR5 memory; check the board's CPU support list for the minimum BIOS version. Budget for a dual-tower air cooler or a 240mm-plus AIO, since none is included. When we checked, only the Ryzen 7 7700 and cheaper picks cost less, and the Ryzen 7 5800X3D cost more.
Key dimensions & specs
- L3 cache: 96MB
- Max boost: 5GHz
- Cores / threads: 8 cores
- Rated power: 120W
- Threads: 16
- Socket: AM5
- Memory: DDR5
- Cooler in box: No
- Integrated graphics: Yes
Pros
- 96MB of L3 cache from 3D V-Cache
- Integrated graphics for display output without a graphics card
- First-generation AM5 3D V-Cache
- The Zen 4 architecture
Cons
- No cooler in the box
- Rated power trails the Ryzen 7 5700X (65W)
- Costs more than the Ryzen 7 5700X at the time of writing
Premium Pick2 of 4
AMD Ryzen 7 5800X3D on Amazon (opens in a new tab)
The Ryzen 7 5800X3D is the last X3D chip for AM4.
Best for
- Buyers for whom price is not the deciding factor.
Skip if
- Look at the others if this bothers you: aM4 is a final-generation platform with no newer CPUs coming.
Why we like it
It lets an existing AM4 board take a cache upgrade without a new platform or DDR5. It matches the Ryzen 7 7800X3D on L3 cache (96MB). Its 4.5GHz boost clock is the lowest in this group; the Ryzen 7 7700 leads at 5.3GHz.
On rated power it sits mid-pack at 105W: the Ryzen 7 5700X offers 65W, and the Ryzen 7 7800X3D comes in at 120W. Like the Ryzen 7 5700X, it has an AM4 socket, while the Ryzen 7 7800X3D uses an AM5 socket. It also comes with a drop-in upgrade for many existing AM4 boards after a BIOS update.
It drops into an AM4 board with DDR4 memory; older B450 and X470 boards need a BIOS that supports this chip, so check the support list before swapping. Only the Ryzen 7 7800X3D came close to it on price at the time of writing; it cost the most of the 4 picks.
Key dimensions & specs
- L3 cache: 96MB
- Max boost: 4.5GHz
- Cores / threads: 8 cores
- Rated power: 105W
- Threads: 16
- Socket: AM4
- Memory: DDR4
- Cooler in box: No
- Integrated graphics: No
Pros
- 96MB of L3 cache from 3D V-Cache
- 3D V-Cache on the AM4 platform
- Drop-in upgrade for many existing AM4 boards after a BIOS update
- Rated power of 105W, ahead of the Ryzen 7 7800X3D
Cons
- AM4 is a final-generation platform with no newer CPUs coming
- No cooler in the box
- No integrated graphics, so a graphics card is required
Lowest Price Here3 of 4
AMD Ryzen 7 5700X on Amazon (opens in a new tab)
The Ryzen 7 5700X gives AM4 builds eight cores at a 65W rating.
Best for
- Keeping the budget tight.
Skip if
- Look at the others if this bothers you: aM4 is a final-generation platform with no newer CPUs coming.
Why we like it
It suits players who also stream or edit on a DDR4 platform. It matches the Ryzen 7 7700 on L3 cache (32MB). Its 4.6GHz boost clock ranks third of 4 here, behind the Ryzen 7 7700 (5.3GHz) and ahead of the Ryzen 7 5800X3D (4.5GHz).
On rated power it ties with the Ryzen 7 7700 at 65W. Like the Ryzen 7 5800X3D, it has an AM4 socket, while the Ryzen 7 7800X3D uses an AM5 socket. It also comes with PCIe 4.0 support.
It drops into an AM4 board with DDR4 memory; older B450 and X470 boards need a BIOS that supports this chip, so check the support list before swapping. It cost the least of the 4 picks at the time of writing, with the Ryzen 7 7700 the next step up. What it gives up: no cooler in box, unlike the Ryzen 7 7700; by contrast, the Ryzen 7 7700 has it.
Key dimensions & specs
- L3 cache: 32MB
- Max boost: 4.6GHz
- Cores / threads: 8 cores
- Rated power: 65W
- Threads: 16
- Socket: AM4
- Memory: DDR4
- Cooler in box: No
- Integrated graphics: No
Pros
- 65W rating suits a modest air cooler
- Eight cores on the DDR4 AM4 platform
- PCIe 4.0 support
- Boost clock of 4.6GHz, ahead of the Ryzen 7 5800X3D
Cons
- AM4 is a final-generation platform with no newer CPUs coming
- No cooler in the box
- No integrated graphics, so a graphics card is required
Highest Boost Clock4 of 4
AMD Ryzen 7 7700 on Amazon (opens in a new tab)
The Ryzen 7 7700 is the 65W version of the 7700X and ships with a Wraith Prism cooler.
Best for
- Buyers who put boost clock first.
Skip if
- Skip it if L3 cache matters most to you; the Ryzen 7 7800X3D offers 96MB.
Why we like it
It gives eight AM5 cores without buying a cooler. On L3 cache it ties with the Ryzen 7 5700X at 32MB. Nothing else here matches its 5.3GHz boost clock; the Ryzen 7 7800X3D comes closest at 5GHz.
It matches the Ryzen 7 5700X on rated power (65W). It shares an AM5 socket with the Ryzen 7 7800X3D; the Ryzen 7 5700X goes with an AM4 socket. It needs an AM5 board (A620, B650, B850, X670 or X870 series) and DDR5 memory; check the board's CPU support list for the minimum BIOS version.
On price it sat second of 4, between the cheaper Ryzen 7 5700X and the pricier Ryzen 7 7800X3D, at the time of writing. The trade-off is L3 cache; for more, the Ryzen 7 7800X3D offers 96MB.
Key dimensions & specs
- L3 cache: 32MB
- Max boost: 5.3GHz
- Cores / threads: 8 cores
- Rated power: 65W
- Threads: 16
- Socket: AM5
- Memory: DDR5
- Cooler in box: Yes
- Integrated graphics: Yes
Pros
- 65W rating suits a modest air cooler
- Wraith Stealth cooler in the box
- Integrated graphics for display output without a graphics card
- Highest boost clock of the picks (5.3GHz)
Cons
- L3 cache trails the Ryzen 7 7800X3D (96MB)
- Costs more than the Ryzen 7 5700X at the time of writing
How We Chose
Each pick was assessed across 4 criteria weighted for real-world use.
- Upgrade path
- We considered how long each socket is likely to receive new CPUs.
- Power and cooling
- We recorded each chip's rated power and what cooler class it needs.
- Platform cost
- We noted socket, memory type and whether a cooler is included, since they change the real price.
- Game-relevant specs
- We compared L3 cache, boost clocks and core counts from AMD's and Intel's product pages.
What to Look for in an 8-Core CPUs
Key buying criteria so you get the right fit the first time.
How much L3 cache you need
Among these picks, L3 cache runs from 32MB on the Ryzen 7 7700 to 96MB on the Ryzen 7 7800X3D. Settle how much you need before comparing prices, since paying for more rarely helps if your use never reaches it.
Match the CPU to your graphics card and monitor
At 1440p and 4K the graphics card sets most frame rates, so a mid-range CPU is often enough. At 1080p with a high-refresh monitor, the CPU matters much more.
Spend on the part that limits your games, not on the bigger number.
The socket decides your upgrade path
The socket fixes which motherboards and future CPUs you can use. AM5 has had several CPU generations; AM4 has no newer chips coming.
If you plan to upgrade later, a current platform is worth a small premium.
Cores matter for streaming and creation
Six and eight cores cover gaming. Streaming with CPU encoding, video editing and compiling benefit from twelve or sixteen.
If you encode on the graphics card instead, core count matters less.
Cache helps games more than clocks
AMD's X3D chips add a large stacked L3 cache that keeps more game data close to the cores. In CPU-limited games that often helps more than a higher boost clock.
The gain shrinks when the graphics card is the limit.
How to Choose an 8-Core CPUs
By priority
| Priority | Consider | Why |
|---|---|---|
| Buyers who want first-generation AM5 3D V-Cache | Ryzen 7 7800X3D | First-generation AM5 3D V-Cache |
| Buyers for whom price is not the deciding factor | Ryzen 7 5800X3D | 3D V-Cache on the AM4 platform at the highest price in the group |
| Keeping the budget tight | Ryzen 7 5700X | The cheapest way into this group, below the Ryzen 7 7700 |
| Buyers who put boost clock first | Ryzen 7 7700 | The highest boost clock here (5.3GHz) |
Scroll sideways to see every column.
Key specs side by side
Figures as each maker states them.
| Processor | L3 cache | Max boost | Cores / threads | Rated power |
|---|---|---|---|---|
| Ryzen 7 7800X3D | 96MB | 5GHz | 8 cores | 120W |
| Ryzen 7 5800X3D | 96MB | 4.5GHz | 8 cores | 105W |
| Ryzen 7 5700X | 32MB | 4.6GHz | 8 cores | 65W |
| Ryzen 7 7700 | 32MB | 5.3GHz | 8 cores | 65W |
Scroll sideways to see every column.
By price at the time of writing
Prices change often; these tiers reflect Amazon prices when this guide was updated.
| Price tier | Processors |
|---|---|
| About $150 to $250 | Ryzen 7 5700X, Ryzen 7 7700 |
| About $250 to $500 | Ryzen 7 7800X3D, Ryzen 7 5800X3D |
Frequently Asked Questions
How do these processors compare on boost clock?
The Ryzen 7 7700 leads at 5.3GHz, ahead of the Ryzen 7 7800X3D at 5GHz; the Ryzen 7 5800X3D sits at the other end with 4.5GHz.
Which is the cheapest pick in this guide?
That was the Ryzen 7 5700X at our last check; if you can stretch, the Ryzen 7 7700 is the next step up and the Ryzen 7 5800X3D the priciest.
Will a new CPU work in my current motherboard?
Only if the socket matches and the board's BIOS supports it. Check the maker's CPU support list for the minimum BIOS version.
What memory should I pair with it?
AM5 and LGA1851 use DDR5; AM4 uses DDR4. For AM5, a 32GB DDR5-6000 kit is a common pairing; check the board's memory support list.
What does the rated power figure mean?
It is AMD's default TDP or Intel's base power. Chips can draw more under boost, so size the cooler for sustained loads, not the label alone.
Bottom Line
Our first pick is the Ryzen 7 7800X3D, chosen for first-generation AM5 3D V-Cache. Look at the Ryzen 7 5800X3D for 3D V-Cache on the AM4 platform at the highest price in the group, the Ryzen 7 5700X for the cheapest way into this group, below the Ryzen 7 7700 and the Ryzen 7 7700 for the highest boost clock here (5.3GHz) if those matter more to you.
An X3D eight-core chip is the gaming choice; a non-X3D one costs less and runs cooler.