NVIDIA RTX A2000 12 GB vs NVIDIA RTX A5000 Comparison

The NVIDIA RTX A5000 is the unequivocal performance leader in this comparison, dominating the RTX A2000 12 GB in every metric where both cards were tested. However, the RTX A2000 12 GB holds its own as a compact, low-power workstation card with a distinct form-factor advantage. The data reveals a clear hierarchy: the A5000 delivers roughly three times the raw compute and graphics throughput of the A2000, but the A2000 offers a dramatically smaller physical footprint and significantly lower power requirements.

FAQ

Q: Which card is faster in DirectX 12 gaming and professional workloads?

A: The NVIDIA RTX A5000 wins decisively. In the 3DMark Steel Nomad DX12 test, the A5000 scored 3,783, while the RTX A2000 12 GB scored only 1,309, representing a 65.4% deficit for the smaller card.

Q: How does the memory configuration differ between the two cards?

A: The RTX A5000 features 24 GB of GDDR6 memory on a 384-bit bus, delivering 768.0 GB/s of bandwidth. The RTX A2000 12 GB has 12 GB of GDDR6 on a 192-bit bus, providing 288.0 GB/s. The A5000 offers double the capacity and 2.67 times the bandwidth.

Q: What are the power consumption requirements for each card?

A: The RTX A2000 12 GB has a 70 W TDP and requires no external power connectors, with a suggested power supply of 250 W. The RTX A5000 has a 230 W TDP, requires a single 8-pin power connector, and needs a 550 W suggested power supply.

Q: Do both cards support the same modern graphics APIs?

A: Yes, both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. They also share the same Ampere architecture and are built on Samsung's 8 nm process node.

Q: Which card has better compute performance in OpenCL workloads?

A: The RTX A5000 is substantially faster. In the Geekbench OpenCL test, the A5000 scored 157,905, whereas the RTX A2000 12 GB scored 66,998, a 57.6% gap in favor of the A5000.

Q: Are there differences in physical dimensions that affect system compatibility?

A: Yes. The RTX A2000 12 GB measures 167 mm in length and 69 mm in height, making it a compact dual-slot card. The RTX A5000 is significantly larger at 267 mm in length and 112 mm in height, also dual-slot. Both are end-of-life products.

Where Each One Wins

The RTX A5000 wins every performance benchmark in which both cards were tested. The 3DMark Steel Nomad DX12 test shows the A5000 at 3,783 versus 1,309 for the A2000, a 65.4% advantage. Similarly, in Geekbench OpenCL, the A5000 scores 157,905 against 66,998, a 57.6% lead. There are no benchmark wins for the A2000 in the head-to-head data.

However, the RTX A2000 12 GB wins on physical and power efficiency metrics. Its 70 W TDP is less than a third of the A5000's 230 W, and it requires no power connectors, drawing entirely from the PCIe slot. The A2000's 167 mm length and 69 mm height make it suitable for space-constrained chassis where the A5000's 267 mm length and 112 mm height would not fit. The A2000 also has a lower suggested power supply requirement of 250 W versus 550 W for the A5000.

For multi-GPU or dense workstation builds, the A2000's compact size and low power draw are decisive advantages. The A5000, by contrast, is the clear choice when maximum compute throughput per card is the priority, regardless of space or power budget.

Architecture Differences

Both cards are built on NVIDIA's Ampere architecture and use Samsung's 8 nm process node, but they employ vastly different chips. The RTX A2000 12 GB uses the GA106 chip with 12,000 million transistors on a 276 mm² die. The RTX A5000 uses the GA102 chip, which packs 28,300 million transistors into a 628 mm² die. This gives the A5000 more than double the transistor count and die area.

The A5000's GA102 chip also achieves a slightly higher transistor density at 45.1M per mm², compared to 43.5M per mm² for the A2000's GA106. In terms of compute resources, the A5000 has 8,192 shading units, 256 texture mapping units, and 96 render output units. The A2000 offers 3,328 shading units, 104 TMUs, and 48 ROPs. The A5000's advantage extends to ray tracing and tensor cores: it has 64 RT cores and 256 tensor cores, while the A2000 has 26 RT cores and 104 tensor cores.

Clock speeds also differ substantially. The A5000 runs at a 1,170 MHz base and 1,695 MHz boost, whereas the A2000 operates at a lower 562 MHz base and 1,200 MHz boost. The A5000's memory clock is 2,000 MHz (16 Gbps effective), compared to 1,500 MHz (12 Gbps effective) for the A2000. Both cards support PCIe 4.0 x16 and feature four display outputs, though the A2000 uses mini-DisplayPort 1.4a connectors while the A5000 uses full-size DisplayPort 1.4a.

Specification Differences

The two cards differ across nearly every core specification. The RTX A5000 has 24 GB of memory versus 12 GB for the A2000. The A5000's 384-bit memory bus provides 768.0 GB/s of bandwidth, compared to the A2000's 192-bit bus and 288.0 GB/s. The A5000's FP32 performance is 27.77 TFLOPS, which is 3.48 times the A2000's 7.987 TFLOPS. FP16 performance follows the same 1:1 ratio, with the A5000 at 27.77 TFLOPS and the A2000 at 7.987 TFLOPS.

Pixel and texture fill rates show similar gaps. The A5000 achieves 162.7 GPixel/s and 433.9 GTexel/s, while the A2000 manages 57.60 GPixel/s and 124.8 GTexel/s. The A5000's TDP of 230 W is more than three times the A2000's 70 W, and the A5000 requires a single 8-pin power connector where the A2000 needs none. The A5000 also has a larger physical footprint at 267 mm by 112 mm versus 167 mm by 69 mm for the A2000.

The A2000 has a launch MSRP of 449 USD; no launch MSRP is listed for the A5000. Both cards are end-of-life products, share the same Workstation Ampere generation, and have identical successors in Workstation Ada. The A2000 was released later, on 2021-11-22, while the A5000 came out on 2021-04-11.

Head-to-Head Benchmarks

The most significant performance gap appears in the 3DMark Steel Nomad DX12 test. The RTX A5000 scores 3,783, which is 2.89 times the A2000's 1,309. This 65.4% delta represents the largest relative difference between the two cards in any shared benchmark. This test stresses direct compute and graphics throughput, where the A5000's 8,192 shading units and 64 RT cores provide a massive parallel processing advantage over the A2000's 3,328 shading units and 26 RT cores.

In the Geekbench OpenCL test, the A5000 again dominates, scoring 157,905 against 66,998 for the A2000. This 57.6% delta reflects the A5000's superior raw compute capabilities, driven by its higher clock speeds and more than double the shading units. The A5000's 1,695 MHz boost clock versus the A2000's 1,200 MHz boost clock further amplifies this difference.

The A5000 also benefits from its memory subsystem in these workloads. With 768.0 GB/s of bandwidth versus 288.0 GB/s, the A5000 can feed its compute units far more efficiently. The 24 GB capacity versus 12 GB also allows larger datasets to reside on-card, reducing potential PCIe transfers in professional applications. Notably, the A5000 has additional benchmark scores in the FACT PACK, including a Passmark G3D score of 22,541 and a Passmark GPU Compute score of 12,455, though no comparable scores exist for the A2000.

The Verdict

The data is unambiguous: the NVIDIA RTX A5000 is the superior performer in every measurable benchmark shared with the RTX A2000 12 GB. Its 65.4% lead in 3DMark Steel Nomad and 57.6% lead in Geekbench OpenCL make it the obvious choice for any workload where raw throughput is paramount. The A5000's 24 GB memory capacity and 768.0 GB/s bandwidth provide headroom for large datasets, and its 27.77 TFLOPS FP32 performance is nearly 3.5 times that of the A2000.

However, the RTX A2000 12 GB serves a distinct purpose. Its 70 W TDP, slot-powered design, and 167 mm length make it ideal for compact workstations, HPC nodes, or multi-card configurations where power and space are at a premium. The A2000's 7.987 TFLOPS and 288.0 GB/s of bandwidth are not trivial; they represent a capable level of performance for a card that requires no external power connectors and fits in tight chassis.

The choice comes down to priorities. For users who need maximum compute density per card and have adequate power and space, the RTX A5000 is the only logical selection. For those building small-form-factor systems or seeking to minimize power draw without sacrificing Ampere features like ray tracing and tensor cores, the RTX A2000 12 GB offers a compelling balance. The RTX A5000 wins on performance; the RTX A2000 wins on efficiency and size. Neither card is a poor choice within its intended use case, but the A5000's benchmark dominance makes it the default recommendation for performance-critical professional workloads.