NVIDIA GeForce GTX 770 vs NVIDIA RTX A2000 Mobile Comparison

The benchmark data presents a clear generational divide. The NVIDIA RTX A2000 Mobile is decisively faster in every head-to-head test, leveraging its modern Ampere architecture to deliver scores that are multiples of the older GeForce GTX 770. The GTX 770, a desktop card from the Kepler era, retains a higher percentile ranking among all GPUs, but this is a statistical artifact of its desktop-class positioning versus a mobile part. For any workload that can use modern APIs, the RTX A2000 Mobile is the superior choice.

The Verdict

The data leads to an unambiguous conclusion: the NVIDIA RTX A2000 Mobile is the outright performance winner. In the Geekbench OpenCL test, the A2000 Mobile scores 56,518 against the GTX 770's 15,707, a performance deficit of 72.2% for the older card. In Vulkan, the A2000 Mobile's 53,146 score dwarfs the GTX 770's 19,166, a 63.9% advantage. There is no benchmark in the head-to-head set where the GTX 770 wins.

However, the choice is not purely about raw speed. The RTX A2000 Mobile is an integrated mobile part (IGP) with a 95 W TDP, designed for portable workstations. The GTX 770 is a dual-slot desktop card with a 230 W TDP and a 550 W suggested PSU, representing a completely different physical and power envelope. If the requirement is for a mobile workstation GPU, the A2000 Mobile is the only viable option and offers massive performance gains. If the requirement is for a legacy desktop system where the GTX 770 is already installed, the data shows it is severely outclassed, but its physical form factor prevents a direct swap with the mobile part. The verdict is simple: the A2000 Mobile is the superior processor for any new system; the GTX 770 is a legacy part that should be replaced if modern performance is needed.

FAQ

Q: How much faster is the RTX A2000 Mobile than the GTX 770 in OpenCL?

A: The RTX A2000 Mobile scores 56,518 in Geekbench OpenCL, while the GTX 770 scores 15,707. This represents a 72.2% higher score for the A2000 Mobile.

Q: Which card has a higher average benchmark score?

A: The GTX 770 has a higher average benchmark score of 14,747, compared to the RTX A2000 Mobile's 13,821. This is despite the A2000 Mobile winning all head-to-head tests.

Q: What is the architectural generation gap between the two?

A: The GTX 770 is based on the Kepler architecture (chip GK104) on a 28 nm process. The RTX A2000 Mobile is based on the Ampere architecture (chip GA107) on an 8 nm process.

Q: Does the RTX A2000 Mobile support hardware ray tracing?

A: Yes. The RTX A2000 Mobile has 20 RT Cores, a feature entirely absent from the GTX 770, which has none listed.

Q: What is the difference in memory technology and size?

A: The GTX 770 uses 2 GB of GDDR5 on a 256-bit bus, while the RTX A2000 Mobile uses 4 GB of GDDR6 on a 128-bit bus. The GTX 770 offers higher bandwidth (224.4 GB/s) compared to the A2000 Mobile's 192.0 GB/s.

Q: Which GPU has a higher boost clock?

A: The RTX A2000 Mobile has a boost clock of 1687 MHz, which is significantly higher than the GTX 770's boost clock of 1085 MHz.

Architecture Differences

The two GPUs represent distinct architectural eras. The GTX 770 uses the GK104 chip on the Kepler architecture, fabricated by TSMC on a 28 nm process. It is a monolithic design with 3,540 million transistors on a 294 mm² die, yielding a transistor density of 12.0 million per mm². The RTX A2000 Mobile uses the GA107 chip on the Ampere architecture, fabricated by Samsung on an 8 nm process. This newer chip packs 8,700 million transistors into a smaller 200 mm² die, achieving a transistor density of 43.5 million per mm². The Ampere architecture introduces dedicated hardware absent from Kepler: 20 RT Cores and 80 Tensor Cores. The GTX 770 has no such specialized units. The A2000 Mobile also supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the GTX 770 is limited to DirectX 12 (11_0) and Vulkan 1.2.175. This fundamental architectural shift explains the massive performance disparity in modern workloads.

Specification Differences

The specification sheets reveal stark differences beyond raw compute. The RTX A2000 Mobile has a base clock of 1215 MHz and a boost clock of 1687 MHz, compared to the GTX 770's 1046 MHz base and 1085 MHz boost. The A2000 Mobile's memory runs at 12 Gbps effective, while the GTX 770's runs at 7 Gbps. The GTX 770 has a wider 256-bit memory bus, but the A2000 Mobile compensates with newer GDDR6 memory. The A2000 Mobile has more shading units (2560 vs 1536) and more ROPs (48 vs 32), but the GTX 770 has more TMUs (128 vs 80). The A2000 Mobile's FP32 compute is 8.637 TFLOPS, more than double the GTX 770's 3.333 TFLOPS. The power envelope is reversed: the GTX 770 is a 230 W dual-slot card requiring two power connectors and a 550 W PSU, while the A2000 Mobile is a 95 W IGP with no power connectors. The GTX 770 uses a PCIe 3.0 x16 interface, while the A2000 Mobile uses PCIe 4.0 x16.

Head-to-Head Benchmarks

The two available head-to-head benchmarks tell a story of total dominance. In Geekbench OpenCL, the RTX A2000 Mobile scores 56,518, a 72.2% lead over the GTX 770's 15,707. This is not a marginal improvement; it is a transformative generation leap. The A2000 Mobile delivers more than 3.5 times the OpenCL performance. In Geekbench Vulkan, the result is similar. The A2000 Mobile scores 53,146, which is 63.9% higher than the GTX 770's 19,166. The GTX 770's Vulkan score is less than half of the A2000 Mobile's, indicating that the older architecture struggles with modern graphics APIs.

Despite losing both head-to-head tests, the GTX 770 has a higher average benchmark score (14,747) than the A2000 Mobile (13,821). This is because the GTX 770's average is based on a different set of benchmarks (Geekbench Metal, OpenCL, and Vulkan) while the A2000 Mobile's average includes PassMark tests where it scores low (e.g., 57 in DirectX 10, 68 in DirectX 11, 47 in DirectX 12). The A2000 Mobile's PassMark G3D score is 9611, which is solid, but the low legacy DirectX scores drag down its average. The GTX 770's percentile rank of 57 is also higher than the A2000 Mobile's 55, reflecting its position among a broader set of GPUs.

Where Each One Wins

The RTX A2000 Mobile wins decisively in every head-to-head test and in all modern compute and graphics workloads. Its 8.637 TFLOPS of FP32 performance, support for DirectX 12 Ultimate, and dedicated RT and Tensor cores make it the clear choice for any application leveraging these features. The data shows it is 72.2% ahead in OpenCL and 63.9% ahead in Vulkan, which are the relevant metrics for modern software. It is also the only viable option for mobile or compact systems, given its IGP form factor and 95 W TDP.

The GTX 770 has no benchmark wins in the head-to-head data. Its only advantages are in physical attributes: a wider 256-bit memory bus providing higher bandwidth (224.4 GB/s vs 192.0 GB/s) and a higher average benchmark score (14,747 vs 13,821) due to the different test set. It also has a higher percentile rank (57 vs 55), but this is a relative measure against all GPUs, not a measure of head-to-head capability. For a legacy desktop system running DirectX 11 or older software that does not utilize modern APIs, the GTX 770 remains functional. However, the data offers no scenario where the GTX 770 outperforms the RTX A2000 Mobile in a direct comparison. The GTX 770's only "win" is in bandwidth, which does not translate to a single benchmark victory. For any new purchase or any workload that can use the A2000 Mobile's feature set, the choice is clear.