AMD Ryzen 7 7800X3D vs AMD Ryzen 7 8700G Comparison

The AMD Ryzen 7 8700G and AMD Ryzen 7 7800X3D are both 8-core, 16-thread desktop processors on the AMD Socket AM5 platform, but they target different priorities. The 8700G, part of the 8000 series, is built on the Zen 4 architecture with the Phoenix codename, while the 7800X3D, from the 7000 series, uses the Raphael codename with the same Zen 4 architecture. Both chips share a 4.20 GHz base clock, dual-channel DDR5 memory support with 83.2 GB/s bandwidth, and a 65-watt versus 120-watt TDP difference. The 8700G features a higher 5.10 GHz boost clock compared to the 7800X3D's 5.00 GHz, and it includes the Radeon 780M integrated graphics, whereas the 7800X3D has a basic Radeon Graphics solution. Their average benchmark scores are nearly identical, with the 8700G scoring 33089 and the 7800X3D scoring 33079, placing both in the 83rd percentile of all CPUs. The head-to-head comparison shows the 8700G winning 13 benchmarks against the 7800X3D's 10, but the margin of victory and the nature of those wins tell a more nuanced story.

Head-to-Head Benchmarks

The most striking difference in the head-to-head data is the 7800X3D's dominance in physics and prime number calculations. In the PassMark physics test, the 7800X3D scores 3522 against the 8700G's 1647, a massive 53.2% advantage. Similarly, in the PassMark find prime numbers test, the 7800X3D scores 324 versus 103, representing a 68.2% lead. These are the largest deltas in the entire comparison, and they highlight the 7800X3D's specialized strength in workloads that benefit from its larger cache. The 7800X3D also wins the PassMark multithread test with 34293 against 31690, a 7.6% margin, and the Geekbench multicore test with 15610 versus 14584, a 6.6% advantage. In Cinebench R15 multicore, the 7800X3D leads with 2878.5 against 2693, a 6.4% win, and it edges out the 8700G in 3DMark 16-thread and max-thread tests by 0.8% and 0.6%, respectively.

The 8700G counters with wins in single-threaded and lower-thread-count workloads, where its higher boost clock provides an edge. In 3DMark single-thread, the 8700G scores 1010 versus 959, a 5.3% lead, and in 3DMark 2-thread it wins 1978 to 1887, a 4.8% margin. The 8700G also takes the PassMark single-thread test with 3928 against 3759, a 4.5% advantage, and the Cinebench R23 single-core test with 1817 versus 1713, a 6.1% win. In Cinebench R23 multicore, the 8700G surprisingly wins with 17128 against 16817, a 1.8% margin, despite losing the older R15 multicore test. The 8700G also shows strength in floating-point math, scoring 63815 against 61187, a 4.3% lead, and in data encryption with 22842 versus 22346, a 2.2% win. Other narrow victories for the 8700G include data compression (0.6%), random string sorting (1.3%), and 3DMark 4-thread (3.8%) and 8-thread (0.8%) tests.

FAQ

Q: Which processor has a higher single-thread score?

A: The AMD Ryzen 7 8700G wins all single-thread benchmarks. It scores 1010 in 3DMark single-thread versus 959, 1817 in Cinebench R23 single-core versus 1713, and 3928 in PassMark single-thread versus 3759. Its boost clock of 5.10 GHz, compared to 5.00 GHz, likely contributes to these margins.

Q: How much faster is the 7800X3D in physics workloads?

A: The 7800X3D is significantly faster in the PassMark physics test, scoring 3522 against the 8700G's 1647. This represents a 53.2% advantage, making it the largest single-benchmark gap in the comparison. The 7800X3D also leads by 68.2% in the PassMark find prime numbers test, scoring 324 versus 103.

Q: What is the TDP difference between these two CPUs?

A: The 8700G has a TDP of 65 watts, while the 7800X3D has a TDP of 120 watts. This 55-watt difference means the 8700G is rated for substantially lower power consumption, which could be relevant for system cooling and power supply requirements.

Q: Do both processors support the same memory type?

A: Yes, both support DDR5 memory with a dual-channel bus and identical 83.2 GB/s memory bandwidth. However, the 7800X3D supports ECC memory, while the 8700G does not. Additionally, the 7800X3D offers PCIe Gen 5 with 24 lanes, whereas the 8700G uses PCIe Gen 4 with 20 lanes.

Q: Which processor has more L3 cache?

A: The 7800X3D has 96 MB of shared L3 cache, compared to the 8700G's 16 MB. This six-fold difference in cache size is the primary architectural distinction and likely explains the 7800X3D's wins in physics and prime number tests, which are cache-sensitive workloads.

Q: How do their average benchmark scores compare?

A: The 8700G has an average benchmark score of 33089, while the 7800X3D scores 33079. This is a negligible difference of 10 points, and both CPUs sit in the 83rd percentile of all CPUs. Their nearest rivals include the Intel Core i7-13650HX and AMD Ryzen 7 7745HX, both with identical scores, and the AMD Ryzen 9 PRO 6950H, which is 0.3% to 0.4% lower.

Where Each One Wins

The 8700G is the clear winner in single-threaded and lightly threaded workloads. It wins all single-thread benchmarks, including 3DMark, Cinebench R23, and PassMark, with margins ranging from 4.5% to 6.1%. It also takes the 2-thread and 4-thread 3DMark tests, suggesting responsiveness in everyday applications and games that rely on fewer cores. The 8700G's floating-point math advantage of 4.3% and its wins in data encryption and compression indicate strengths in multimedia processing and general productivity tasks. For users building a compact or power-efficient system, the 8700G's 65-watt TDP and integrated Radeon 780M graphics make it a self-contained solution that does not require a discrete GPU for basic display output.

The 7800X3D is the dominant performer in cache-sensitive and multithreaded workloads. Its 53.2% lead in physics and 68.2% lead in prime number finding are decisive, and it also wins the PassMark multithread test by 7.6% and Geekbench multicore by 6.6%. The 7800X3D's advantage in Cinebench R15 multicore (6.4%) and its wins in 3DMark 16-thread and max-thread tests point toward sustained performance under heavy load. The 96 MB of L3 cache is the likely driver of these results, making the 7800X3D the better choice for simulation, scientific computing, and any application that repeatedly accesses large datasets. Its support for ECC memory and PCIe Gen 5 further positions it for workstation-style builds where data integrity and high-bandwidth peripherals matter.

Specification Differences

The two processors differ in several key specifications beyond their benchmark results. The 8700G has a boost clock of 5.10 GHz, while the 7800X3D boosts to 5.00 GHz, a 0.10 GHz difference. The TDP ratings diverge significantly, with the 8700G at 65 watts and the 7800X3D at 120 watts. The 8700G is built on a 4 nm process node with 25,000 million transistors on a 178 mm² die, whereas the 7800X3D uses a 5 nm node with 11,270 million transistors on a 71 mm² die. The L3 cache differs dramatically: 16 MB shared on the 8700G versus 96 MB shared on the 7800X3D. The 8700G supports PCIe Gen 4 with 20 lanes, while the 7800X3D supports PCIe Gen 5 with 24 lanes. The 8700G does not support ECC memory, but the 7800X3D does. The integrated graphics differ, with the 8700G featuring Radeon 780M and the 7800X3D featuring basic Radeon Graphics. The 8700G has an unlocked multiplier, while the 7800X3D does not. Their release dates are also different: the 7800X3D launched on 2023-01-03, and the 8700G launched on 2024-01-07. The launch MSRP for the 8700G is $329, and for the 7800X3D it is $449.

Architecture Differences

Both CPUs share the Zen 4 architecture, but they are built on different process nodes and have distinct codenames. The 8700G is codenamed Phoenix and uses a 4 nm process from TSMC, while the 7800X3D is codenamed Raphael and uses a 5 nm process from TSMC. The transistor count reflects this difference: the 8700G packs 25,000 million transistors on a 178 mm² die, versus 11,270 million on a 71 mm² die for the 7800X3D. This suggests the 8700G integrates more functionality, including the more powerful Radeon 780M graphics, on a larger die. The most significant architectural difference is the L3 cache: the 7800X3D's 96 MB of shared L3 cache is six times larger than the 8700G's 16 MB. This cache capacity is the primary reason for the 7800X3D's wins in physics and prime number tests, which are known to benefit from larger caches. Both CPUs have identical L1 cache (64 KB per core) and L2 cache (1 MB per core), and both support dual-channel DDR5 memory with 83.2 GB/s bandwidth. The 7800X3D's support for ECC memory and PCIe Gen 5, versus the 8700G's lack of ECC and PCIe Gen 4, further distinguishes their architectural positioning.

The Verdict

The data shows that the AMD Ryzen 7 8700G is the better choice for users prioritizing single-threaded performance, lower power consumption, and integrated graphics capability. Its 5.10 GHz boost clock drives wins across all single-thread benchmarks, and its 65-watt TDP makes it suitable for compact or energy-conscious builds. The Radeon 780M integrated graphics provide a more capable onboard solution than the basic Radeon Graphics on the 7800X3D, potentially eliminating the need for a discrete GPU in entry-level or office systems. The 8700G's wins in floating-point math, data encryption, and data compression also make it a strong option for everyday productivity and multimedia tasks.

The AMD Ryzen 7 7800X3D is the clear winner for cache-intensive and heavily multithreaded workloads. Its 96 MB of L3 cache delivers a 53.2% advantage in physics and a 68.2% lead in prime number finding, making it the superior choice for scientific simulations, data analysis, and any application that benefits from large, fast-accessible datasets. The 7800X3D also leads in PassMark multithread (7.6%), Geekbench multicore (6.6%), and Cinebench R15 multicore (6.4%), indicating stronger sustained performance under full-core load. Its support for ECC memory and PCIe Gen 5 adds reliability and future-proofing for professional workloads, despite its higher 120-watt TDP and lack of an unlocked multiplier. Ultimately, the choice depends on workload: the 8700G for single-thread responsiveness and efficiency, the 7800X3D for cache-heavy and multithreaded performance. Their nearly identical average benchmark scores (33089 versus 33079) and shared 83rd percentile ranking confirm that neither is universally faster, but each excels in its intended domain.