AMD Ryzen 7 5705GE vs NVIDIA DGX Spark (MediaTek AHJ11488B) Comparison

Where Each One Wins

The recorded data contains no direct head-to-head benchmark results between the AMD Ryzen 7 5705GE and the NVIDIA DGX Spark (MediaTek AHJ11488B). The benchmark arrays for both processors are empty, and the wins counters show zero wins for each side. This absence of measured scores means the comparison must rely entirely on architectural and specification-based analysis from the database.

The AMD Ryzen 7 5705GE targets the desktop segment with an unlocked multiplier, while the NVIDIA DGX Spark is classified as a mobile processor with a locked multiplier. The Ryzen part uses 8 cores and 16 threads, which suits workloads that benefit from simultaneous multithreading. The Spark uses 20 cores and 20 threads, meaning it has no SMT support, but its higher core count gives it an advantage in heavily parallel, thread-scalable tasks.

For single-threaded responsiveness, the Ryzen 7 5705GE has a higher boost clock of 4.60 GHz versus 4.00 GHz on the Spark. This suggests the AMD part holds an edge in latency-sensitive applications where one or two threads dominate, such as older games or lightly threaded productivity software. Conversely, the Spark's 20 physical cores provide a raw throughput advantage in multi-core rendering, scientific simulation, or compilation workloads, provided the software can use all cores without SMT.

The memory subsystem also splits the use cases. The Ryzen part uses dual-channel DDR4 with 51.2 GB/s bandwidth, while the Spark uses quad-channel LPDDR5X with 273.1 GB/s. The Spark delivers over five times the theoretical memory bandwidth, which is critical for data-intensive workloads like large matrix operations, real-time inference, or memory-bound analytics. The Ryzen part's slower memory bandwidth limits it to lighter memory pressure scenarios.

Architecture Differences

The two processors come from different architectural lineages. The AMD Ryzen 7 5705GE uses the Zen 3 architecture on the Cezanne codename, built on a 7 nm process at TSMC. The NVIDIA DGX Spark uses the GB10 codename with a 3 nm process, also from TSMC, but its architecture field is listed as null in the database. The generation fields confirm this split: the Ryzen is listed as "Ryzen 7 (Zen 3 (Cezanne))" while the Spark is "Spark (GB10)".

Die size differs substantially. The Ryzen 7 5705GE measures 180 mm², while the Spark measures 208 mm². The Ryzen part has a transistor count of 10,700 million, but the Spark's transistor count is not recorded. The process node difference from 7 nm to 3 nm means the Spark packs more cores into a slightly larger die, indicating a much denser transistor layout.

Cache hierarchies are distinct. The Ryzen part provides 64 KB L1 per core, 512 KB L2 per core, and 16 MB L3 shared across all cores. The Spark provides 128 KB L1 per core, 2 MB L2 per core, and 8 MB shared L3. Per-core L2 is four times larger on the Spark, which helps reduce latency for repeated data access within each core. However, the Ryzen part has double the shared L3 (16 MB versus 8 MB), which benefits inter-core communication and shared data structures.

Integrated graphics differ completely. The Ryzen 7 5705GE includes Radeon Graphics with 512 shader processors. The Spark includes the GB20B "Blackwell" GPU, which is a far more powerful integrated graphics solution, though the database does not list shader counts or clock speeds for either GPU. The Spark's Blackwell GPU is designed for accelerated compute, not just display output.

Memory support also diverges. The Ryzen part uses DDR4 with a dual-channel bus and 51.2 GB/s bandwidth. The Spark uses LPDDR5X with a quad-channel bus and 273.1 GB/s bandwidth. ECC memory is not supported on either processor. PCIe connectivity is listed as Gen 3 with 16 lanes for the Ryzen (CPU only), while the Spark lists PCIe as "N/A".

Power envelopes differ significantly. The Ryzen 7 5705GE has a 35 W TDP, while the Spark has a 140 W TDP. This fourfold difference in power budget reflects the Spark's higher core count, larger die, and faster memory interface. The Ryzen part is designed for low-power desktop operation, while the Spark is built for sustained high-performance compute in a mobile-class device.

FAQ

Q: Which processor has more cores?

A: The NVIDIA DGX Spark has 20 cores and 20 threads. The AMD Ryzen 7 5705GE has 8 cores and 16 threads.

Q: What is the boost clock difference?

A: The Ryzen 7 5705GE boosts to 4.60 GHz, while the DGX Spark boosts to 4.00 GHz. The Ryzen part has a 0.60 GHz higher boost clock.

Q: How does memory bandwidth compare?

A: The DGX Spark supports quad-channel LPDDR5X with 273.1 GB/s bandwidth. The Ryzen 7 5705GE supports dual-channel DDR4 with 51.2 GB/s bandwidth.

Q: Which processor has a larger L3 cache?

A: The Ryzen 7 5705GE has 16 MB of shared L3 cache. The DGX Spark has 8 MB of shared L3 cache.

Q: Are both processors unlocked for overclocking?

A: No. The Ryzen 7 5705GE has an unlocked multiplier. The DGX Spark has a locked multiplier.

Q: What process nodes are used?

A: The Ryzen 7 5705GE is built on a 7 nm process. The DGX Spark is built on a 3 nm process. Both are manufactured by TSMC.

Specification Differences

The following fields differ between the AMD Ryzen 7 5705GE and the NVIDIA DGX Spark:

• Cores: 8 versus 20
• Threads: 16 versus 20
• Base clock: 3.80 GHz versus 2.80 GHz
• Boost clock: 4.60 GHz versus 4.00 GHz
• TDP: 35 W versus 140 W
• Socket: AMD Socket AM4 versus null (not listed)
• Codename: Cezanne versus GB10
• Generation: Ryzen 7 (Zen 3 (Cezanne)) versus Spark (GB10)
• Process node: 7 nm versus 3 nm
• Transistors: 10,700 million versus null
• Die size: 180 mm² versus 208 mm²
• L1 cache: 64 KB per core versus 128 KB per core
• L2 cache: 512 KB per core versus 2 MB per core
• L3 cache: 16 MB versus 8 MB (shared)
• Memory support: DDR4 versus LPDDR5X
• Memory bus: Dual-channel versus Quad-channel
• Memory bandwidth: 51.2 GB/s versus 273.1 GB/s
• PCIe: Gen 3, 16 lanes (CPU only) versus N/A
• Integrated graphics: Radeon Graphics 512SP versus GB20B "Blackwell"
• Market segment: Desktop versus Mobile
• Release date: 2025-02-23 versus 2025-10-14
• Multiplier unlocked: true versus false
• Part number: 100-000001803 versus DSE1-275-A1
• Launch MSRP: null versus $3999

Fields that match include manufacturer (both listed as AMD or Unknown respectively, so not identical), foundry (both TSMC), ECC memory (false on both), production status (Active on both), and percentile versus all CPUs (both at 50).

Head-to-Head Benchmarks

The database contains no recorded benchmark scores for either processor. The benchmark arrays are empty, and the head-to-head benchmark list is also empty. As a result, no exact performance deltas can be cited from measurements. The analysis must instead rely on the specification differences to infer relative performance.

The most significant numerical advantage for the DGX Spark is memory bandwidth. At 273.1 GB/s, it offers 5.34 times the bandwidth of the Ryzen 7 5705GE's 51.2 GB/s. This translates directly to throughput for memory-bound workloads. For example, workloads that stream large datasets through the CPU, such as database processing, image filtering, or real-time physics simulations, would see proportionally higher ceiling performance on the Spark.

Core count gives the Spark a 2.5 times advantage in physical cores (20 versus 8). In perfectly parallel workloads with no SMT benefit, the Spark could theoretically process 2.5 times more threads simultaneously. However, the Ryzen part's SMT support provides 16 logical threads, reducing the practical thread advantage to 1.25 times (20 versus 16) in software that uses logical threads.

The Ryzen 7 5705GE counters with a 15% higher boost clock (4.60 GHz versus 4.00 GHz). For single-threaded code, this clock advantage can translate to roughly proportional performance gains, assuming same Instructions Per Clock (IPC). The architectural differences between Zen 3 and GB10 mean IPC is not directly comparable, but the clock delta remains a measurable specification advantage.

Cache per core favors the Spark. The Spark has 2 MB L2 per core versus 512 KB per core on the Ryzen, a 4 times difference. This larger per-core cache reduces memory traffic for working sets that fit within L2, potentially improving performance on tasks with high data locality. Conversely, the Ryzen's 16 MB L3 versus 8 MB L3 on the Spark gives it a 2 times advantage in shared cache, which helps multi-threaded workloads that share data.

Power efficiency heavily favors the Ryzen part. At 35 W TDP versus 140 W TDP, the Ryzen uses 25% of the power budget of the Spark. For thermally constrained environments or systems without robust cooling, the Ryzen part is the only viable option. The Spark's 140 W TDP requires substantial cooling and power delivery infrastructure.

The Verdict

The data supports a clear split by use case. The NVIDIA DGX Spark is positioned for high-throughput compute. Its 20 physical cores, 273.1 GB/s memory bandwidth, and 3 nm process node with a 208 mm² die indicate a processor designed for parallel, data-intensive workloads. The 140 W TDP confirms this is not a low-power part. The $3999 launch MSRP further indicates a premium compute platform.

The AMD Ryzen 7 5705GE is positioned for low-power desktop operation. Its 35 W TDP, 8 cores with SMT, and 4.60 GHz boost clock suit general-purpose desktop use, lightly threaded applications, and scenarios where power draw and thermals matter. The 16 MB L3 cache and dual-channel DDR4 provide adequate bandwidth for standard desktop tasks.

For users prioritizing multi-core throughput, memory bandwidth, and sustained compute performance, the DGX Spark is the data-supported choice. Its 20 cores and 273.1 GB/s bandwidth leave no ambiguity in raw capacity. For users prioritizing low power consumption, single-threaded clock speed, and a desktop form factor with an unlocked multiplier, the Ryzen 7 5705GE is the data-supported choice.

Neither processor shows benchmark scores in the database, so performance judgments must be drawn from specifications. The Spark's advantages in core count, memory bandwidth, per-core L2 cache, and process node are substantial. The Ryzen's advantages in boost clock, L3 cache size, power efficiency, and unlocked multiplier are equally clear. The recorded data does not place one processor as universally superior; it defines two distinct profiles for different tasks.