AMD Athlon X4 830 vs Intel Xeon E5540 Comparison

Where Each One Wins

The benchmark data is unambiguous: the AMD Athlon X4 830 wins every recorded Cinebench test against the Intel Xeon E5540. Across all five head-to-head comparisons, the Athlon X4 830 takes a 3.3% to 3.6% lead. This consistency matters because it spans both single-threaded and multi-threaded workloads, meaning the advantage is not tied to a specific scaling pattern or core-count quirk.

In multi-core workloads, the Athlon X4 830 posts 248 points in Cinebench R15 multicore versus 240 for the Xeon E5540, a 3.3% margin. That margin grows slightly to 3.4% in Cinebench R20 multicore, where the AMD scores 1035 against 1001. The largest multi-core gap appears in Cinebench R23 multicore: 2465 versus 2384, again 3.4% in favor of the AMD part. These are modest but consistent wins, not outliers.

Single-core results follow the same pattern. The Athlon X4 830 records 146 in Cinebench R20 singlecore, 3.5% ahead of the Xeon's 141. In Cinebench R23 singlecore, the AMD scores 348 against 336, a 3.6% gap, the largest margin in the entire comparison. For workloads that depend on per-thread performance, such as lightly threaded applications or older software that does not scale well across cores, the AMD part holds a slight but real edge.

The Xeon E5540 does not win a single head-to-head test in this dataset. Its strengths, if any, are not evident in Cinebench results. The data shows a clean sweep for the AMD Athlon X4 830 across all measured scenarios. However, the overall average benchmark score tells a slightly different story: the AMD part averages 848 points across all recorded benchmarks, while the Xeon averages 820. That puts the AMD at the 23rd percentile of all CPUs in the database, versus the 22nd percentile for the Intel. Both are low in absolute terms, but the AMD is consistently a notch above.

For practical use, this means the Athlon X4 830 is the better choice for anyone running Cinebench-style rendering or general CPU-bound tasks where clock speed and per-core efficiency matter. The Xeon E5540, despite having more threads, does not convert that thread count into a performance advantage in these tests. The AMD's higher base clock (3.00 GHz versus 2.53 GHz) and boost clock (3.40 GHz versus 2.80 GHz) likely explain why it wins every round.

Architecture Differences

The two processors come from different architectural generations and manufacturing approaches. The AMD Athlon X4 830 uses the Steamroller architecture, codenamed Kaveri, built on a 28 nm process at GlobalFoundries. The Intel Xeon E5540 uses Nehalem, codenamed Gainestown, built on a 45 nm process at Intel. The process node difference is substantial, with the AMD part using a much smaller manufacturing process, which typically allows for higher clock speeds at lower power draw.

Transistor counts reflect the architectural gap. The AMD chip packs 2,411 million transistors on a 245 mm² die, while the Intel chip has 731 million transistors on a 263 mm² die. This is a striking difference: the AMD part crams more than three times as many transistors into a slightly smaller physical area. That density explains why the AMD runs at higher clocks while drawing less power, 65 W TDP versus 80 W TDP for the Intel.

Cache configurations differ significantly. The AMD Athlon X4 830 has 256 KB of L1 cache and 4 MB of L2 cache, with no L3 cache at all. The Intel Xeon E5540 has 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 8 MB of shared L3 cache. For a quad-core chip, that works out to 256 KB L1 total and 1 MB L2 total on the Intel side, but the shared 8 MB L3 gives it a large pooled cache that the AMD lacks. Despite this apparent advantage for the Intel in cache hierarchy, the benchmark results show the AMD still wins, suggesting that the AMD's higher clock speeds and architectural efficiency outweigh the missing L3.

Memory support also differs. Both support DDR3, but the AMD uses a dual-channel memory bus with 34.1 GB/s of bandwidth, while the Intel uses a triple-channel memory bus with 25.6 GB/s. The AMD has higher theoretical memory bandwidth despite fewer channels, which may contribute to its multicore wins. The AMD does not support ECC memory, while the Xeon does, a feature relevant for server environments where data integrity is critical.

Other differences include PCIe generations: the AMD supports Gen 3 with 16 lanes from the CPU, while the Intel supports Gen 2. The AMD has an unlocked multiplier, making it overclockable, while the Xeon is locked. The AMD targets the desktop market on Socket FM2+, while the Xeon targets server and workstation use on Socket 1366. Their production status is end-of-life for both, and the Xeon's launch date is recorded as March 2009, though no release date is listed for the AMD part.

The Verdict

The data points to a clear but narrow victory for the AMD Athlon X4 830. In every recorded benchmark, the AMD outperforms the Intel Xeon E5540 by margins between 3.3% and 3.6%. This is not a dramatic difference, but it is consistent and appears across both single-core and multi-core tests. For anyone choosing between these two for a general-purpose desktop build, the AMD is the better performer according to the measurements.

The Xeon E5540 does have one notable advantage: ECC memory support. If the application requires ECC for data integrity, as is common in server or workstation scenarios, the Xeon is the only one of the two that can provide it. The database shows the Xeon also has a larger shared L3 cache of 8 MB, which could benefit certain workloads with high cache reuse, though the Cinebench results do not show this translating into a win.

The AMD part also offers an unlocked multiplier, which means it can be overclocked to push beyond its already higher clocks. Its lower TDP of 65 W versus 80 W makes it easier to cool and more power-efficient. The PCIe Gen 3 support is another modern advantage over the Xeon's Gen 2.

For a desktop user focused on raw performance in rendering or general computing, the AMD Athlon X4 830 is the pick. For a server workload requiring ECC memory and the Xeon's platform features, the Intel part has a specific role. But on pure benchmark scores, the AMD wins five out of five tests, and the average benchmark score confirms it: 848 versus 820.

FAQ

Q: Which processor has the higher clock speeds?

A: The AMD Athlon X4 830 has a base clock of 3.00 GHz and a boost clock of 3.40 GHz. The Intel Xeon E5540 has a base clock of 2.53 GHz and a boost clock of 2.80 GHz.

Q: Does the Intel Xeon E5540 support ECC memory?

A: Yes, the Intel Xeon E5540 supports ECC memory. The AMD Athlon X4 830 does not support ECC memory.

Q: How many threads does each processor support?

A: The AMD Athlon X4 830 has 4 cores and 4 threads. The Intel Xeon E5540 has 4 cores and 8 threads, using Hyper-Threading.

Q: What is the largest performance margin between the two in any test?

A: The largest margin is 3.6% in Cinebench R23 singlecore, where the AMD scores 348 and the Intel scores 336.

Q: Which processor has a larger cache?

A: The Intel Xeon E5540 has 8 MB of shared L3 cache plus per-core L1 and L2. The AMD Athlon X4 830 has 4 MB of L2 cache and no L3 cache.

Q: What is the average benchmark score for each?

A: The AMD Athlon X4 830 has an average benchmark score of 848, placing it at the 23rd percentile. The Intel Xeon E5540 has an average benchmark score of 820, placing it at the 22nd percentile.

Head-to-Head Benchmarks

The head-to-head data leaves no room for ambiguity. The AMD Athlon X4 830 wins all five Cinebench tests, with margins ranging from 3.3% to 3.6%. The most significant win for the AMD comes in Cinebench R23 singlecore, where it scores 348 against the Intel's 336, a 3.6% advantage. This test isolates per-core performance, and the AMD's higher clocks clearly pay off.

In Cinebench R15 multicore, the AMD scores 248 versus 240, a 3.3% win. This is the smallest margin in the set, but still a clear victory. The gap widens slightly in Cinebench R20 multicore, where the AMD records 1035 against 1001, a 3.4% margin. The same 3.4% margin appears in Cinebench R23 multicore, with scores of 2465 and 2384.

Cinebench R20 singlecore shows the AMD at 146 versus 141, a 3.5% margin. Across all tests, the AMD's advantage is remarkably stable, hovering around 3.3% to 3.6%. This consistency suggests a fundamental per-clock advantage for the AMD architecture, rather than a workload-specific quirk.

The Xeon E5540's higher thread count (8 threads versus 4) does not help it in multi-core Cinebench tests. This may be because Cinebench scales well with cores, but the AMD's higher clock speeds and newer architecture compensate for having fewer threads. The Xeon's 8 MB L3 cache also fails to provide a competitive edge in these workloads.

For context, the nearest rivals to the AMD in the database include the Intel Xeon X5492 with an average score of 852, which is 0.4% ahead of the AMD's 848. The Intel Core i5-5250U scores 856, 0.9% ahead. The AMD's closest rivals are all within about 1% of its average score, showing that the Athlon X4 830 sits in a tight performance cluster. The Xeon E5540's nearest rival is the AMD PRO A10-8750B at 821, just 0.1% ahead, and the Intel Xeon X3440 at 815, 0.6% behind.

Specification Differences

The two processors differ across nearly every specification category. The AMD Athlon X4 830 is built on a 28 nm process with 2,411 million transistors on a 245 mm² die. The Intel Xeon E5540 uses a 45 nm process with 731 million transistors on a 263 mm² die. The AMD has a 65 W TDP, while the Intel has an 80 W TDP.

Clock speeds: the AMD runs at 3.00 GHz base and 3.40 GHz boost. The Intel runs at 2.53 GHz base and 2.80 GHz boost. Both have 4 cores, but the AMD has 4 threads while the Intel has 8 threads.

Cache: the AMD has 256 KB L1 and 4 MB L2, with no L3. The Intel has 64 KB L1 per core, 256 KB L2 per core, and 8 MB shared L3. Memory: both support DDR3, but the AMD uses dual-channel with 34.1 GB/s bandwidth, while the Intel uses triple-channel with 25.6 GB/s. ECC memory is supported only on the Intel.

PCIe: the AMD supports Gen 3 with 16 lanes, the Intel supports Gen 2. The AMD has an unlocked multiplier, the Intel is locked. Sockets differ: AMD Socket FM2+ versus Intel Socket 1366. The AMD targets desktop, the Intel targets server and workstation. The Intel has a recorded launch date of March 2009 and a launch MSRP of $774, while the AMD has no recorded launch MSRP or release date. Both are end-of-life products.