AMD Athlon PRO 3045B vs Intel Xeon X3460 Comparison

The AMD Athlon PRO 3045B and Intel Xeon X3460 are two processors from different eras and market segments, yet they land within 0.6% of each other in average benchmark score. The Athlon PRO 3045B is a modern 14 nm mobile part with a 15 W TDP, while the Xeon X3460 is a 45 nm server/workstation chip from 2009 with a 95 W TDP. Despite the Xeon’s age and higher power draw, it wins all five head-to-head benchmark comparisons, though by a narrow margin of roughly 6-7% in each test. The data shows two fundamentally different design philosophies: one prioritizing efficiency and modern features, the other raw multi-threaded throughput from a larger core count.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Athlon PRO 3045B has an average benchmark score of 872, while the Intel Xeon X3460 scores 866. The difference is 0.6%, with the Xeon X3460 appearing as a nearest rival to the Athlon at that exact delta.

Q: How many cores and threads does each CPU offer?

A: The AMD Athlon PRO 3045B has 2 cores and 4 threads, while the Intel Xeon X3460 has 4 cores and 8 threads. This gives the Xeon a 2x advantage in both core and thread counts.

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

A: The AMD Athlon PRO 3045B has a TDP of 15 W, whereas the Intel Xeon X3460 has a TDP of 95 W. That is a substantial 80 W gap, reflecting the Athlon’s mobile focus versus the Xeon’s server/workstation heritage.

Q: Which processor supports ECC memory?

A: Both processors support ECC memory. The AMD Athlon PRO 3045B lists ECC memory as true, and the Intel Xeon X3460 also lists ECC memory as true.

Q: What are the production statuses of these chips?

A: The AMD Athlon PRO 3045B is listed as Active production, while the Intel Xeon X3460 is End-of-life. The Xeon was released on 2009-09-07, making it a legacy part.

Q: Does either processor include integrated graphics?

A: Yes, the AMD Athlon PRO 3045B includes Radeon Vega (2CU) integrated graphics. The Intel Xeon X3460 has no integrated graphics listed.

Architecture Differences

The architectural gap between these two CPUs is massive. The AMD Athlon PRO 3045B uses the Zen architecture on a 14 nm process node from GlobalFoundries, with a codename of Dali. It packs 3,500 million transistors on a 148 mm² die. The Intel Xeon X3460 uses the Nehalem architecture on a 45 nm process node from Intel, with codename Lynnfield, containing just 774 million transistors on a 296 mm² die. This means the Athlon fits over 4.5x more transistors into roughly half the die area.

Cache configurations differ significantly. The Athlon PRO 3045B has 96 KB of L1 cache per core, 512 KB of L2 cache per core, and 4 MB of shared L3 cache. The Xeon X3460 has 64 KB of L1 per core, 256 KB of L2 per core, and a larger 8 MB of shared L3 cache. The Xeon’s L3 advantage is 4 MB, but the Athlon has double the L1 and L2 per core.

Memory support diverges completely. The Athlon uses DDR4 with dual-channel memory and a bandwidth of 38.4 GB/s. The Xeon uses DDR3 with dual-channel memory and a bandwidth of 21.3 GB/s. The Athlon offers nearly 80% more memory bandwidth. PCIe support also differs: the Athlon provides Gen 3 with 12 lanes (CPU only), while the Xeon provides Gen 2 with 16 lanes (CPU only).

The Athlon features integrated Radeon Vega graphics (2CU), while the Xeon has none. The Athlon is built for the mobile segment on AMD Socket FP5, whereas the Xeon targets server/workstation on Intel Socket 1156. The Athlon belongs to the 3000 series, while the Xeon has no series designation. The Athlon’s clock speeds are lower (2.30 GHz base, 3.20 GHz boost) compared to the Xeon (2.80 GHz base, 3.47 GHz boost).

The Verdict

The Intel Xeon X3460 is the faster processor in every benchmark test included in the data. It wins all five head-to-head comparisons, with deltas ranging from -6.3% to -6.7% relative to the AMD Athlon PRO 3045B. If raw compute performance is the only criterion, the Xeon is the clear choice despite being end-of-life and consuming over six times the power.

The AMD Athlon PRO 3045B is the better pick for modern systems where efficiency and platform features matter. It offers a 15 W TDP versus 95 W, DDR4 memory support, Gen 3 PCIe, integrated graphics, and an active production status. The Xeon’s DDR3 and Gen 2 PCIe are legacy technologies. For a new build, the Athlon’s platform longevity and lower power requirements make it more practical, even though it trails by roughly 6% in multi-threaded workloads.

For users with an existing Socket 1156 motherboard, the Xeon X3460 could be a drop-in upgrade if the board supports it. But for anyone starting fresh, the Athlon PRO 3045B’s modern memory, PCIe, and power characteristics outweigh the modest performance deficit. The data shows a 23rd percentile ranking for both CPUs, indicating they are entry-level performers in the broader CPU landscape.

Specification Differences

The two processors differ in nearly every specification category. The AMD Athlon PRO 3045B has 2 cores and 4 threads, while the Intel Xeon X3460 has 4 cores and 8 threads. Base clocks are 2.30 GHz for the Athlon and 2.80 GHz for the Xeon; boost clocks are 3.20 GHz and 3.47 GHz respectively. TDP is 15 W for the Athlon versus 95 W for the Xeon.

The Athlon uses AMD Socket FP5, while the Xeon uses Intel Socket 1156. The Athlon’s architecture is Zen with codename Dali, and the Xeon’s is Nehalem with codename Lynnfield. Process nodes are 14 nm (GlobalFoundries) for the Athlon and 45 nm (Intel) for the Xeon. Transistor counts are 3,500 million versus 774 million, and die sizes are 148 mm² versus 296 mm².

Cache hierarchies: the Athlon has 96 KB L1 per core, 512 KB L2 per core, and 4 MB shared L3; the Xeon has 64 KB L1 per core, 256 KB L2 per core, and 8 MB shared L3. Memory support is DDR4 for the Athlon and DDR3 for the Xeon, with bandwidths of 38.4 GB/s and 21.3 GB/s respectively. The Athlon has PCIe Gen 3 with 12 lanes, while the Xeon has Gen 2 with 16 lanes. The Athlon includes Radeon Vega (2CU) integrated graphics; the Xeon has none. Market segments are Mobile for the Athlon and Server/Workstation for the Xeon. Production status is Active for the Athlon and End-of-life for the Xeon, with the Xeon’s release date given as 2009-09-07.

Head-to-Head Benchmarks

The Intel Xeon X3460 wins every head-to-head benchmark, but the margins are consistent and narrow. In Cinebench R15 multicore, the Xeon scores 253 versus the Athlon’s 237, a -6.3% delta in the Xeon’s favor. Cinebench R20 multicore shows the Xeon at 1057 and the Athlon at 988, a -6.5% delta. The pattern repeats in Cinebench R23 multicore: 2518 for the Xeon, 2354 for the Athlon, also -6.5%.

Single-core results tell the same story. In Cinebench R20 single-core, the Xeon scores 149 against the Athlon’s 139, a -6.7% delta. Cinebench R23 single-core has the Xeon at 355 and the Athlon at 332, again -6.5%. The Xeon’s higher base and boost clocks (2.80 GHz/3.47 GHz versus 2.30 GHz/3.20 GHz) likely drive these wins, despite the Athlon’s newer architecture and larger per-core cache.

The Athlon’s only benchmark wins outside the head-to-head list are in Geekbench, where it scores 1287 multicore and 766 singlecore. The Xeon does not have Geekbench results in the data. However, these Geekbench scores do not change the head-to-head outcome, where the Xeon leads by 6.3% to 6.7% across all five Cinebench tests. The average benchmark scores are nearly identical — 872 for the Athlon, 866 for the Xeon — confirming that the performance gap is small in aggregate.

Where Each One Wins

The Intel Xeon X3460 wins in every measured multi-threaded and single-threaded Cinebench scenario. Its 4 cores and 8 threads give it a structural advantage over the Athlon’s 2 cores and 4 threads. The Xeon also wins on raw clock speed, with a 0.50 GHz higher base clock and 0.27 GHz higher boost clock. For users running heavily threaded workloads like video rendering, 3D modeling, or server-side compilation, the Xeon’s consistent 6.5% lead in Cinebench R20 and R23 multicore tests makes it the better compute engine.

The AMD Athlon PRO 3045B wins in platform efficiency and modern feature support. Its 15 W TDP is drastically lower than the Xeon’s 95 W, making it suitable for compact or fanless builds where heat and power draw are constraints. The Athlon supports DDR4 memory with 38.4 GB/s bandwidth, compared to the Xeon’s DDR3 at 21.3 GB/s — a 17.1 GB/s advantage that benefits memory-intensive applications. The Athlon’s Gen 3 PCIe and integrated Radeon Vega graphics eliminate the need for a discrete GPU in basic systems. Its active production status means it remains available for new designs, unlike the end-of-life Xeon.

For gaming or general desktop use, the Athlon’s integrated graphics and lower power footprint make it more practical, even if the Xeon would outperform it in CPU-bound tasks. The Xeon requires a discrete graphics card and a socket 1156 motherboard, both of which are obsolete. In short: the Xeon wins on raw compute, the Athlon wins on efficiency, memory bandwidth, and platform longevity. The choice depends on whether the user prioritizes the 6.5% performance edge or the 80 W power savings and modern feature set.